A flaw was found in the Linux kernel's ext4 filesystem. A local user can cause an out-of-bound write in in fs/jbd2/transaction.c code, a denial of service, and a system crash by unmounting a crafted ext4 filesystem image.

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - A malformed SG_IO ioctl issued for a SCSI device in the     Linux kernel leads to a local kernel data leak     manifesting in up to approximately 1000 memory pages     copied to the userspace. The problem has limited scope     as non-privileged users usually have no permissions to     access SCSI device files.(CVE-2018-1000204)

  - A flaw in the load_elf_binary() function in the Linux     kernel allows a local attacker to leak the base address     of .text and stack sections for setuid binaries and     bypass ASLR because install_exec_creds() is called too     late in this function.(CVE-2019-11190)

  - A flaw was found in the Linux kernel in the     hid_debug_events_read() function in the     drivers/hid/hid-debug.c file. A lack of the certain     checks may allow a privileged user ('root') to achieve     an out-of-bounds write and thus receiving user space     buffer corruption.(CVE-2018-9516)

  - A flaw was found in the Linux kernel's NFS41+     subsystem. NFS41+ shares mounted in different network     namespaces at the same time can make bc_svc_process()     use wrong back-channel IDs and cause a use-after-free     vulnerability. Thus a malicious container user can     cause a host kernel memory corruption and a system     panic. Due to the nature of the flaw, privilege     escalation cannot be fully ruled out.(CVE-2018-16884)

  - An issue was discovered in the Linux kernel through     4.19. An information leak in cdrom_ioctl_select_disc in     drivers/cdrom/cdrom.c could be used by local attackers     to read kernel memory because a cast from unsigned long     to int interferes with bounds checking. This is similar     to CVE-2018-10940 and CVE-2018-16658.(CVE-2018-18710)

  - A flaw was found in the Linux kernel in the function     hso_probe() which reads if_num value from the USB     device (as an u8) and uses it without a length check to     index an array, resulting in an OOB memory read in     hso_probe() or hso_get_config_data(). An attacker with     a forged USB device and physical access to a system     (needed to connect such a device) can cause a system     crash and a denial of service.(CVE-2018-19985)

  - A possible memory corruption due to a type confusion     was found in the Linux kernel in the sk_clone_lock()     function in the net/core/sock.c. The possibility of     local escalation of privileges cannot be fully ruled     out for a local unprivileged attacker.(CVE-2018-9568)

  - A flaw was found in the Linux kernels implementation of     Logical link control and adaptation protocol (L2CAP),     part of the Bluetooth stack. An attacker with physical     access within the range of standard Bluetooth     transmission can create a specially crafted packet. The     response to this specially crafted packet can contain     part of the kernel stack which can be used in a further     attack.(CVE-2019-3459)

  - A flaw was found in the Linux kernel's implementation     of logical link control and adaptation protocol     (L2CAP), part of the Bluetooth stack in the     l2cap_parse_conf_rsp and l2cap_parse_conf_req     functions. An attacker with physical access within the     range of standard Bluetooth transmission can create a     specially crafted packet. The response to this     specially crafted packet can contain part of the kernel     stack which can be used in a further     attack.(CVE-2019-3460)

  - An information leakage issue was found in the way Linux     kernel's KVM hypervisor handled page fault exceptions     while emulating instructions like VMXON, VMCLEAR,     VMPTRLD, and VMWRITE with memory address as an operand.
    It occurs if the operand is a mmio address, as the     returned exception object holds uninitialized stack     memory contents. A guest user/process could use this     flaw to leak host's stack memory contents to a guest.
    (CVE-2019-7222)

  - A flaw was found in mmap in the Linux kernel allowing     the process to map a null page. This allows attackers     to abuse this mechanism to turn null pointer     dereferences into workable exploits(CVE-2019-9213)

  - A flaw was found in the Linux kernel's ext4 filesystem.
    A local user can cause an out-of-bound write in the     fs/jbd2/transaction.c code, a denial of service, and a     system crash by unmounting a crafted ext4 filesystem     image.(CVE-2018-10882)

  - An issue was discovered in the Linux kernel before     4.18.11. The ipddp_ioctl function in     drivers/net/appletalk/ipddp.c allows local users to     obtain sensitive kernel address information by     leveraging CAP_NET_ADMIN to read the ipddp_route dev     and next fields via an SIOCFINDIPDDPRT ioctl call.
    (CVE-2018-20511)

  - A flaw was found in the implementation of the 'fill     buffer', a mechanism used by modern CPUs when a     cache-miss is made on L1 CPU cache. If an attacker can     generate a load operation that would create a page     fault, the execution will continue speculatively with     incorrect data from the fill buffer while the data is     fetched from higher level caches. This response time     can be measured to infer data in the fill buffer.
    (CVE-2018-12130)

  - Modern Intel microprocessors implement hardware-level     micro-optimizations to improve the performance of     writing data back to CPU caches. The write operation is     split into STA (STore Address) and STD (STore Data)     sub-operations. These sub-operations allow the     processor to hand-off address generation logic into     these sub-operations for optimized writes. Both of     these sub-operations write to a shared distributed     processor structure called the 'processor store     buffer'. As a result, an unprivileged attacker could     use this flaw to read private data resident within the     CPU's processor store buffer. (CVE-2018-12126)

  - Microprocessors use a aEUR~load portaEURtm subcomponent to     perform load operations from memory or IO. During a     load operation, the load port receives data from the     memory or IO subsystem and then provides the data to     the CPU registers and operations in the CPUaEURtms     pipelines. Stale load operations results are stored in     the 'load port' table until overwritten by newer     operations. Certain load-port operations triggered by     an attacker can be used to reveal data about previous     stale requests leaking data back to the attacker via a     timing side-channel. (CVE-2018-12127)

  - Uncacheable memory on some microprocessors utilizing     speculative execution may allow an authenticated user     to potentially enable information disclosure via a side     channel with local access. (CVE-2019-11091)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - The function hso_get_config_data in     drivers/net/usb/hso.c in the Linux kernel through     4.19.8 reads if_num from the USB device (as a u8) and     uses it to index a small array, resulting in an object     out-of-bounds (OOB) read that potentially allows     arbitrary read in the kernel address     space.(CVE-2018-19985)

  - An industry-wide issue was found in the way many modern     microprocessor designs have implemented speculative     execution of instructions (a commonly used performance     optimization). There are three primary variants of the     issue which differ in the way the speculative execution     can be exploited. Variant CVE-2017-5754 relies on the     fact that, on impacted microprocessors, during     speculative execution of instruction permission faults,     exception generation triggered by a faulting access is     suppressed until the retirement of the whole     instruction block. In a combination with the fact that     memory accesses may populate the cache even when the     block is being dropped and never committed (executed),     an unprivileged local attacker could use this flaw to     read privileged (kernel space) memory by conducting     targeted cache side-channel attacks. Note:
    CVE-2017-5754 affects Intel x86-64 microprocessors. AMD     x86-64 microprocessors are not affected by this     issue.(CVE-2017-5754)

  - A non-privileged user is able to mount a fuse     filesystem on RHEL 6 or 7 and crash a system if an     application punches a hole in a file that does not end     aligned to a page boundary.(CVE-2017-15121)

  - A flaw was found in the Linux kernel when attempting to     'punch a hole' in files existing on an ext4 filesystem.
    When punching holes into a file races with the page     fault of the same area, it is possible that freed     blocks remain referenced from page cache pages mapped     to process' address space.(CVE-2015-8839)

  - An industry-wide issue was found in the way many modern     microprocessor designs have implemented speculative     execution of instructions past bounds check. The flaw     relies on the presence of a precisely-defined     instruction sequence in the privileged code and the     fact that memory writes occur to an address which     depends on the untrusted value. Such writes cause an     update into the microprocessor's data cache even for     speculatively executed instructions that never actually     commit (retire). As a result, an unprivileged attacker     could use this flaw to influence speculative execution     and/or read privileged memory by conducting targeted     cache side-channel attacks.(CVE-2018-3693)

  - A Floating Point Unit (FPU) state information leakage     flaw was found in the way the Linux kernel saved and     restored the FPU state during task switch. Linux     kernels that follow the 'Lazy FPU Restore' scheme are     vulnerable to the FPU state information leakage issue.
    An unprivileged local attacker could use this flaw to     read FPU state bits by conducting targeted cache     side-channel attacks, similar to the Meltdown     vulnerability disclosed earlier this     year.(CVE-2018-3665)

  - A bug in the 32-bit compatibility layer of the ioctl     handling code of the v4l2 video driver in the Linux     kernel has been found. A memory protection mechanism     ensuring that user-provided buffers always point to a     userspace memory were disabled, allowing destination     address to be in a kernel space. This flaw could be     exploited by an attacker to overwrite a kernel memory     from an unprivileged userspace process, leading to     privilege escalation.(CVE-2017-13166)

  - It was found that the raw midi kernel driver does not     protect against concurrent access which leads to a     double realloc (double free) in     snd_rawmidi_input_params() and     snd_rawmidi_output_status() which are part of     snd_rawmidi_ioctl() handler in rawmidi.c file. A     malicious local attacker could possibly use this for     privilege escalation.(CVE-2018-10902)

  - A flaw was found in the Linux kernel's implementation     of valid_master_desc() in which a memory buffer would     be compared to a userspace value with an incorrect size     of comparison. By bruteforcing the comparison, an     attacker could determine what was in memory after the     description and possibly obtain sensitive information     from kernel memory.(CVE-2017-13305)

  - A flaw was found in the Linux kernel's ext4 filesystem.
    A local user can cause an out-of-bound write in in     fs/jbd2/transaction.c code, a denial of service, and a     system crash by unmounting a crafted ext4 filesystem     image.(CVE-2018-10882)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote OracleVM system is missing necessary patches to address critical security updates :

  - ib_core: initialize shpd field when allocating 'struct     ib_pd' (Mukesh Kacker) [Orabug: 29384815]

  - Revert 'x86/apic: Make arch_setup_hwirq NUMA node aware'     (Brian Maly) [Orabug: 29542185]

  - qlcnic: fix Tx descriptor corruption on 82xx devices     (Shahed Shaikh) [Orabug: 27708787]

  - block: Fix a race between blk_cleanup_queue and timeout     handling (Bart Van Assche) [Orabug: 29158186]

  - can: gw: ensure DLC boundaries after CAN frame     modification (Oliver Hartkopp) [Orabug: 29215299]     (CVE-2019-3701) (CVE-2019-3701)

  - CIFS: Enable encryption during session setup phase     (Pavel Shilovsky) [Orabug: 29338239] (CVE-2018-1066)

  - ext4: clear i_data in ext4_inode_info when removing     inline data (Theodore Ts'o) [Orabug: 29540709]     (CVE-2018-10881) (CVE-2018-10881)

  - ext4: add more inode number paranoia checks (Theodore     Ts'o) [Orabug: 29545566] (CVE-2018-10882)     (CVE-2018-10882)

  - Revert 'KVM: nVMX: Eliminate vmcs02 pool' (Boris     Ostrovsky) [Orabug: 29542029]

  - Revert 'KVM: VMX: introduce alloc_loaded_vmcs' (Boris     Ostrovsky) [Orabug: 29542029]

  - Revert 'KVM: VMX: make MSR bitmaps per-VCPU' (Boris     Ostrovsky) [Orabug: 29542029]

  - Revert 'KVM: x86: pass host_initiated to functions that     read MSRs' (Boris Ostrovsky) [Orabug: 29542029]

  - Revert 'KVM/x86: Add IBPB support' (Boris Ostrovsky)     [Orabug: 29542029]

  - Revert 'KVM/VMX: Allow direct access to     MSR_IA32_SPEC_CTRL - reloaded' (Boris Ostrovsky)     [Orabug: 29542029]

  - Revert 'KVM/SVM: Allow direct access to     MSR_IA32_SPEC_CTRL' (Boris Ostrovsky) [Orabug: 29542029]

  - Revert 'KVM: SVM: Add MSR-based feature support for     serializing LFENCE' (Boris Ostrovsky) [Orabug: 29542029]

  - Revert 'x86/cpufeatures: rename X86_FEATURE_AMD_SSBD to     X86_FEATURE_LS_CFG_SSBD' (Boris Ostrovsky) [Orabug:
    29542029]

  - Revert 'x86/bugs: Add AMD's SPEC_CTRL MSR usage' (Boris     Ostrovsky) [Orabug: 29542029]

  - Revert 'x86/bugs: Fix the AMD SSBD usage of the     SPEC_CTRL MSR' (Boris Ostrovsky) [Orabug: 29542029]

  - arch: x86: remove unsued SET_IBPB from spec_ctrl.h     (Mihai Carabas) [Orabug: 29336760]

  - x86: cpu: microcode: fix late loading SpectreV2 bugs     eval (Mihai Carabas) [Orabug: 29336760]

  - x86: cpu: microcode: fix late loading SSBD and L1TF bugs     eval (Mihai Carabas) [Orabug: 29336760]

  - x86: cpu: microcode: Re-evaluate bugs in a CPU after     microcode loading (Mihai Carabas) [Orabug: 29336760]

  - x86: cpu: microcode: update flags for all cpus (Mihai     Carabas) [Orabug: 29336760]

  - x86/apic: Make arch_setup_hwirq NUMA node aware (Henry     Willard) [Orabug: 29292411]

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - A flaw was found in the Linux kernel's ext4 filesystem     code. A use-after-free is possible in     ext4_ext_remove_space() function when mounting and     operating a crafted ext4 image.(CVE-2018-10876)

  - A flaw was found in the Linux kernel's ext4 filesystem.
    A local user can cause an out-of-bound write in the     fs/jbd2/transaction.c code, a denial of service, and a     system crash by unmounting a crafted ext4 filesystem     image.(CVE-2018-10882)

  - A use-after-free vulnerability was found in the way the     Linux kernel's KVM hypervisor emulates a preemption     timer for L2 guests when nested (=1) virtualization is     enabled. This high resolution timer(hrtimer) runs when     a L2 guest is active. After VM exit, the sync_vmcs12()     timer object is stopped. The use-after-free occurs if     the timer object is freed before calling sync_vmcs12()     routine. A guest user/process could use this flaw to     crash the host kernel resulting in a denial of service     or, potentially, gain privileged access to a     system.(CVE-2019-7221)

  - A flaw was found in the Linux kernel in the function     hso_probe() which reads if_num value from the USB     device (as an u8) and uses it without a length check to     index an array, resulting in an OOB memory read in     hso_probe() or hso_get_config_data(). An attacker with     a forged USB device and physical access to a system     (needed to connect such a device) can cause a system     crash and a denial of service.(CVE-2018-19985)

  - A possible memory corruption due to a type confusion     was found in the Linux kernel in the sk_clone_lock()     function in the net/core/sock.c. The possibility of     local escalation of privileges cannot be fully ruled     out for a local unprivileged attacker.(CVE-2018-9568)

  - A flaw was found in the Linux kernels implementation of     Logical link control and adaptation protocol (L2CAP),     part of the Bluetooth stack. An attacker with physical     access within the range of standard Bluetooth     transmission can create a specially crafted packet. The     response to this specially crafted packet can contain     part of the kernel stack which can be used in a further     attack.(CVE-2019-3459)

  - A flaw was found in the Linux kernel's implementation     of logical link control and adaptation protocol     (L2CAP), part of the Bluetooth stack in the     l2cap_parse_conf_rsp and l2cap_parse_conf_req     functions. An attacker with physical access within the     range of standard Bluetooth transmission can create a     specially crafted packet. The response to this     specially crafted packet can contain part of the kernel     stack which can be used in a further     attack.(CVE-2019-3460)

  - A flaw was found in mmap in the Linux kernel allowing     the process to map a null page. This allows attackers     to abuse this mechanism to turn null pointer     dereferences into workable exploits(CVE-2019-9213)

  - A new software page cache side channel attack scenario     was discovered in operating systems that implement the     very common 'page cache' caching mechanism. A malicious     user/process could use 'in memory' page-cache knowledge     to infer access timings to shared memory and gain     knowledge which can be used to reduce effectiveness of     cryptographic strength by monitoring algorithmic     behavior, infer access patterns of memory to determine     code paths taken, and exfiltrate data to a blinded     attacker through page-granularity access times as a     side-channel.(CVE-2019-5489)

  - A security flaw was found in the Linux kernel in a way     that the cleancache subsystem clears an inode after the     final file truncation (removal). The new file created     with the same inode may contain leftover pages from     cleancache and the old file data instead of the new     one.(CVE-2018-16862)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Oracle Linux 5 / 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2019-4601 advisory.

    - ext4: verify the depth of extent tree in ext4_find_extent() (Theodore Ts'o)  [Orabug: 29396714]     {CVE-2018-10877} {CVE-2018-10877}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 6 / 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2019-4600 advisory.

    - can: gw: ensure DLC boundaries after CAN frame modification (Oliver Hartkopp)  [Orabug: 29215300]     {CVE-2019-3701} {CVE-2019-3701}
    - ext4: verify the depth of extent tree in ext4_find_extent() (Theodore Ts'o)  [Orabug: 29396713]     {CVE-2018-10877} {CVE-2018-10877}
    - ext4: always verify the magic number in xattr blocks (Theodore Ts'o)  [Orabug: 29437128]     {CVE-2018-10879} {CVE-2018-10879}
    - ext4: add corruption check in ext4_xattr_set_entry() (Theodore Ts'o)  [Orabug: 29437128]     {CVE-2018-10879} {CVE-2018-10879}
    - ext4: clear i_data in ext4_inode_info when removing inline data (Theodore Ts'o)  [Orabug: 29540710]     {CVE-2018-10881} {CVE-2018-10881}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 6 / 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2019-4596 advisory.

    - can: gw: ensure DLC boundaries after CAN frame modification (Oliver Hartkopp)  [Orabug: 29215299]     {CVE-2019-3701} {CVE-2019-3701}
    - CIFS: Enable encryption during session setup phase (Pavel Shilovsky)  [Orabug: 29338239]     {CVE-2018-1066}
    - ext4: clear i_data in ext4_inode_info when removing inline data (Theodore Ts'o)  [Orabug: 29540709]     {CVE-2018-10881} {CVE-2018-10881}
    - ext4: add more inode number paranoia checks (Theodore Ts'o)  [Orabug: 29545566]  {CVE-2018-10882}     {CVE-2018-10882}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3871-5 advisory.

    Wen Xu discovered that a use-after-free vulnerability existed in the ext4 filesystem implementation in the     Linux kernel. An attacker could use this to construct a malicious ext4 image that, when mounted, could     cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10876,     CVE-2018-10879)

    Wen Xu discovered that a buffer overflow existed in the ext4 filesystem implementation in the Linux     kernel. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a     denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10877)

    Wen Xu discovered that an out-of-bounds write vulnerability existed in the ext4 filesystem implementation     in the Linux kernel. An attacker could use this to construct a malicious ext4 image that, when mounted,     could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10878,     CVE-2018-10882)

    Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly ensure that     xattr information remained in inode bodies. An attacker could use this to construct a malicious ext4 image     that, when mounted, could cause a denial of service (system crash). (CVE-2018-10880)

    Wen Xu discovered that the ext4 file system implementation in the Linux kernel could possibly perform an     out of bounds write when updating the journal for an inline file. An attacker could use this to construct     a malicious ext4 image that, when mounted, could cause a denial of service (system crash).
    (CVE-2018-10883)

    It was discovered that a race condition existed in the vsock address family implementation of the Linux     kernel that could lead to a use-after-free condition. A local attacker in a guest virtual machine could     use this to expose sensitive information (host machine kernel memory). (CVE-2018-14625)

    Cfir Cohen discovered that a use-after-free vulnerability existed in the KVM implementation of the Linux     kernel, when handling interrupts in environments where nested virtualization is in use (nested KVM     virtualization is not enabled by default in Ubuntu kernels). A local attacker in a guest VM could possibly     use this to gain administrative privileges in a host machine. (CVE-2018-16882)

    Jann Horn discovered that the procfs file system implementation in the Linux kernel did not properly     restrict the ability to inspect the kernel stack of an arbitrary task. A local attacker could use this to     expose sensitive information. (CVE-2018-17972)

    Jann Horn discovered that the mremap() system call in the Linux kernel did not properly flush the TLB when     completing, potentially leaving access to a physical page after it has been released to the page     allocator. A local attacker could use this to cause a denial of service (system crash), expose sensitive     information, or possibly execute arbitrary code. (CVE-2018-18281)

    Wei Wu discovered that the KVM implementation in the Linux kernel did not properly ensure that ioapics     were initialized. A local attacker could use this to cause a denial of service (system crash).
    (CVE-2018-19407)

    It was discovered that the debug interface for the Linux kernel's HID subsystem did not properly perform     bounds checking in some situations. An attacker with access to debugfs could use this to cause a denial of     service or possibly gain additional privileges. (CVE-2018-9516)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3871-4 advisory.

    USN-3871-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.04 LTS. This update provides the     corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 18.04 LTS for Ubuntu     16.04 LTS.

    Wen Xu discovered that a use-after-free vulnerability existed in the ext4 filesystem implementation in the     Linux kernel. An attacker could use this to construct a malicious ext4 image that, when mounted, could     cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10876,     CVE-2018-10879)

    Wen Xu discovered that a buffer overflow existed in the ext4 filesystem implementation in the Linux     kernel. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a     denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10877)

    Wen Xu discovered that an out-of-bounds write vulnerability existed in the ext4 filesystem implementation     in the Linux kernel. An attacker could use this to construct a malicious ext4 image that, when mounted,     could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10878,     CVE-2018-10882)

    Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly ensure that     xattr information remained in inode bodies. An attacker could use this to construct a malicious ext4 image     that, when mounted, could cause a denial of service (system crash). (CVE-2018-10880)

    Wen Xu discovered that the ext4 file system implementation in the Linux kernel could possibly perform an     out of bounds write when updating the journal for an inline file. An attacker could use this to construct     a malicious ext4 image that, when mounted, could cause a denial of service (system crash).
    (CVE-2018-10883)

    It was discovered that a race condition existed in the vsock address family implementation of the Linux     kernel that could lead to a use-after-free condition. A local attacker in a guest virtual machine could     use this to expose sensitive information (host machine kernel memory). (CVE-2018-14625)

    Cfir Cohen discovered that a use-after-free vulnerability existed in the KVM implementation of the Linux     kernel, when handling interrupts in environments where nested virtualization is in use (nested KVM     virtualization is not enabled by default in Ubuntu kernels). A local attacker in a guest VM could possibly     use this to gain administrative privileges in a host machine. (CVE-2018-16882)

    Jann Horn discovered that the procfs file system implementation in the Linux kernel did not properly     restrict the ability to inspect the kernel stack of an arbitrary task. A local attacker could use this to     expose sensitive information. (CVE-2018-17972)

    Jann Horn discovered that the mremap() system call in the Linux kernel did not properly flush the TLB when     completing, potentially leaving access to a physical page after it has been released to the page     allocator. A local attacker could use this to cause a denial of service (system crash), expose sensitive     information, or possibly execute arbitrary code. (CVE-2018-18281)

    Wei Wu discovered that the KVM implementation in the Linux kernel did not properly ensure that ioapics     were initialized. A local attacker could use this to cause a denial of service (system crash).
    (CVE-2018-19407)

    It was discovered that the debug interface for the Linux kernel's HID subsystem did not properly perform     bounds checking in some situations. An attacker with access to debugfs could use this to cause a denial of     service or possibly gain additional privileges. (CVE-2018-9516)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3871-3 advisory.

    Wen Xu discovered that a use-after-free vulnerability existed in the ext4 filesystem implementation in the     Linux kernel. An attacker could use this to construct a malicious ext4 image that, when mounted, could     cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10876,     CVE-2018-10879)

    Wen Xu discovered that a buffer overflow existed in the ext4 filesystem implementation in the Linux     kernel. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a     denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10877)

    Wen Xu discovered that an out-of-bounds write vulnerability existed in the ext4 filesystem implementation     in the Linux kernel. An attacker could use this to construct a malicious ext4 image that, when mounted,     could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10878,     CVE-2018-10882)

    Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly ensure that     xattr information remained in inode bodies. An attacker could use this to construct a malicious ext4 image     that, when mounted, could cause a denial of service (system crash). (CVE-2018-10880)

    Wen Xu discovered that the ext4 file system implementation in the Linux kernel could possibly perform an     out of bounds write when updating the journal for an inline file. An attacker could use this to construct     a malicious ext4 image that, when mounted, could cause a denial of service (system crash).
    (CVE-2018-10883)

    It was discovered that a race condition existed in the vsock address family implementation of the Linux     kernel that could lead to a use-after-free condition. A local attacker in a guest virtual machine could     use this to expose sensitive information (host machine kernel memory). (CVE-2018-14625)

    Cfir Cohen discovered that a use-after-free vulnerability existed in the KVM implementation of the Linux     kernel, when handling interrupts in environments where nested virtualization is in use (nested KVM     virtualization is not enabled by default in Ubuntu kernels). A local attacker in a guest VM could possibly     use this to gain administrative privileges in a host machine. (CVE-2018-16882)

    Jann Horn discovered that the procfs file system implementation in the Linux kernel did not properly     restrict the ability to inspect the kernel stack of an arbitrary task. A local attacker could use this to     expose sensitive information. (CVE-2018-17972)

    Jann Horn discovered that the mremap() system call in the Linux kernel did not properly flush the TLB when     completing, potentially leaving access to a physical page after it has been released to the page     allocator. A local attacker could use this to cause a denial of service (system crash), expose sensitive     information, or possibly execute arbitrary code. (CVE-2018-18281)

    Wei Wu discovered that the KVM implementation in the Linux kernel did not properly ensure that ioapics     were initialized. A local attacker could use this to cause a denial of service (system crash).
    (CVE-2018-19407)

    It was discovered that the debug interface for the Linux kernel's HID subsystem did not properly perform     bounds checking in some situations. An attacker with access to debugfs could use this to cause a denial of     service or possibly gain additional privileges. (CVE-2018-9516)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3871-1 advisory.

    Wen Xu discovered that a use-after-free vulnerability existed in the ext4 filesystem implementation in the     Linux kernel. An attacker could use this to construct a malicious ext4 image that, when mounted, could     cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10876,     CVE-2018-10879)

    Wen Xu discovered that a buffer overflow existed in the ext4 filesystem implementation in the Linux     kernel. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a     denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10877)

    Wen Xu discovered that an out-of-bounds write vulnerability existed in the ext4 filesystem implementation     in the Linux kernel. An attacker could use this to construct a malicious ext4 image that, when mounted,     could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10878,     CVE-2018-10882)

    Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly ensure that     xattr information remained in inode bodies. An attacker could use this to construct a malicious ext4 image     that, when mounted, could cause a denial of service (system crash). (CVE-2018-10880)

    Wen Xu discovered that the ext4 file system implementation in the Linux kernel could possibly perform an     out of bounds write when updating the journal for an inline file. An attacker could use this to construct     a malicious ext4 image that, when mounted, could cause a denial of service (system crash).
    (CVE-2018-10883)

    It was discovered that a race condition existed in the vsock address family implementation of the Linux     kernel that could lead to a use-after-free condition. A local attacker in a guest virtual machine could     use this to expose sensitive information (host machine kernel memory). (CVE-2018-14625)

    Cfir Cohen discovered that a use-after-free vulnerability existed in the KVM implementation of the Linux     kernel, when handling interrupts in environments where nested virtualization is in use (nested KVM     virtualization is not enabled by default in Ubuntu kernels). A local attacker in a guest VM could possibly     use this to gain administrative privileges in a host machine. (CVE-2018-16882)

    Jann Horn discovered that the procfs file system implementation in the Linux kernel did not properly     restrict the ability to inspect the kernel stack of an arbitrary task. A local attacker could use this to     expose sensitive information. (CVE-2018-17972)

    Jann Horn discovered that the mremap() system call in the Linux kernel did not properly flush the TLB when     completing, potentially leaving access to a physical page after it has been released to the page     allocator. A local attacker could use this to cause a denial of service (system crash), expose sensitive     information, or possibly execute arbitrary code. (CVE-2018-18281)

    Wei Wu discovered that the KVM implementation in the Linux kernel did not properly ensure that ioapics     were initialized. A local attacker could use this to cause a denial of service (system crash).
    (CVE-2018-19407)

    It was discovered that the debug interface for the Linux kernel's HID subsystem did not properly perform     bounds checking in some situations. An attacker with access to debugfs could use this to cause a denial of     service or possibly gain additional privileges. (CVE-2018-9516)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The SUSE Linux Enterprise 15 kernel was updated to receive various security and bugfixes. The following security bugs were fixed :

  - CVE-2018-3620: Local attackers on baremetal systems     could use speculative code patterns on hyperthreaded     processors to read data present in the L1 Datacache used     by other hyperthreads on the same CPU core, potentially     leaking sensitive data. (bnc#1087081).

  - CVE-2018-3646: Local attackers in virtualized guest     systems could use speculative code patterns on     hyperthreaded processors to read data present in the L1     Datacache used by other hyperthreads on the same CPU     core, potentially leaking sensitive data, even from     other virtual machines or the host system.
    (bnc#1089343).

  - CVE-2018-5391 aka 'FragmentSmack': A flaw in the IP     packet reassembly could be used by remote attackers to     consume lots of CPU time (bnc#1103097).

  - CVE-2018-10876: A flaw was found in the ext4 filesystem     code. A use-after-free is possible in     ext4_ext_remove_space() function when mounting and     operating a crafted ext4 image. (bnc#1099811)

  - CVE-2018-10877: The ext4 filesystem is vulnerable to an     out-of-bound access in the ext4_ext_drop_refs() function     when operating on a crafted ext4 filesystem image.
    (bnc#1099846)

  - CVE-2018-10878: A flaw was found in the ext4 filesystem.
    A local user can cause an out-of-bounds write and a     denial of service or unspecified other impact is     possible by mounting and operating a crafted ext4     filesystem image. (bnc#1099813)

  - CVE-2018-10879: A flaw was found in the ext4 filesystem.
    A local user can cause a use-after-free in     ext4_xattr_set_entry function and a denial of service or     unspecified other impact may occur by renaming a file in     a crafted ext4 filesystem image. (bnc#1099844)

  - CVE-2018-10880: Linux kernel is vulnerable to a     stack-out-of-bounds write in the ext4 filesystem code     when mounting and writing to a crafted ext4 image in     ext4_update_inline_data(). An attacker could use this to     cause a system crash and a denial of service.
    (bnc#1099845)

  - CVE-2018-10881: A flaw was found in the ext4 filesystem.
    A local user can cause an out-of-bound access in     ext4_get_group_info function, a denial of service, and a     system crash by mounting and operating on a crafted ext4     filesystem image. (bnc#1099864)

  - CVE-2018-10882: A flaw was found in the ext4 filesystem.
    A local user can cause an out-of-bound write in in     fs/jbd2/transaction.c code, a denial of service, and a     system crash by unmounting a crafted ext4 filesystem     image. (bnc#1099849)

  - CVE-2018-10883: A flaw was found in the ext4 filesystem.
    A local user can cause an out-of-bounds write in     jbd2_journal_dirty_metadata(), a denial of service, and     a system crash by mounting and operating on a crafted     ext4 filesystem image. (bnc#1099863)

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:2948 advisory.

  - kernel: v4l2: disabled memory access protection mechanism allowing privilege escalation (CVE-2017-13166)

  - kernel: Use-after-free in drivers/media/dvb-core/dvb_frontend.c (CVE-2017-16648)

  - kernel: Salsa20 encryption algorithm does not correctly handle zero-length inputs allowing local attackers     to cause denial-of-service (CVE-2017-17805)

  - kernel: HMAC implementation does not validate that the underlying cryptographic hash algorithm is unkeyed     allowing local attackers to cause denial-of-service (CVE-2017-17806)

  - kernel: Mishandled freeing of instances in pcrypt.c can allow a local user to cause a denial of service     (CVE-2017-18075)

  - kernel: Inifinite loop vulnerability in mm/madvise.c:madvise_willneed() function allows local denial of     service (CVE-2017-18208)

  - kernel: out-of-bounds access in the show_timer function in kernel/time/posix-timers.c (CVE-2017-18344)

  - kernel: netfilter: xtables NULL pointer dereference in ip6_tables.c:ip6t_do_table() leading to a crash     (CVE-2018-1065)

  - kernel: Out-of-bounds write via userland offsets in ebt_entry struct in netfilter/ebtables.c     (CVE-2018-1068)

  - kernel: NULL pointer dereference in ext4/mballoc.c:ext4_process_freed_data() when mounting crafted ext4     image (CVE-2018-1092)

  - kernel: NULL pointer dereference in ext4/xattr.c:ext4_xattr_inode_hash() causes crash with crafted ext4     image (CVE-2018-1094)

  - kernel: out-of-bound access in fs/posix_acl.c:get_acl() causes crash with crafted ext4 image     (CVE-2018-1095)

  - kernel: vhost: Information disclosure in vhost/vhost.c:vhost_new_msg() (CVE-2018-1118)

  - kernel: fuse-backed file mmap-ed onto process cmdline arguments causes denial of service (CVE-2018-1120)

  - hw: cpu: speculative store bypass (CVE-2018-3639)

  - kernel: drivers/block/loop.c mishandles lo_release serialization allowing denial-of-service     (CVE-2018-5344)

  - kernel: TCP segments with random offsets allow a remote denial of service (SegmentSmack) (CVE-2018-5390)

  - kernel: IP fragments with random offsets allow a remote denial of service (FragmentSmack) (CVE-2018-5391)

  - kernel: Kernel address information leak in drivers/acpi/sbshc.c:acpi_smbus_hc_add() function potentially     allowing KASLR bypass (CVE-2018-5750)

  - kernel: Missing length check of payload in net/sctp/sm_make_chunk.c:_sctp_make_chunk() function allows     denial of service (CVE-2018-5803)

  - kernel: buffer overflow in drivers/net/wireless/ath/wil6210/wmi.c:wmi_set_ie() may lead to memory     corruption (CVE-2018-5848)

  - kernel: race condition in snd_seq_write() may lead to UAF or OOB-access (CVE-2018-7566)

  - kernel: Memory leak in the sas_smp_get_phy_events function in drivers/scsi/libsas/sas_expander.c     (CVE-2018-7757)

  - kernel: Integer overflow in drivers/gpu/drm/udl/udl_fb.c:udl_fb_mmap() can allow attackers to execute code     in kernel space (CVE-2018-8781)

  - kernel: Buffer overflow in hidp_process_report (CVE-2018-9363)

  - kernel: Invalid pointer dereference in xfs_ilock_attr_map_shared() when mounting crafted xfs image     allowing denial of service (CVE-2018-10322)

  - kernel: out-of-bound access in ext4_ext_drop_refs function with a crafted ext4 image (CVE-2018-10877)

  - kernel: out-of-bound write in ext4_init_block_bitmap function with a crafted ext4 image (CVE-2018-10878)

  - kernel: use-after-free detected in ext4_xattr_set_entry with a crafted file (CVE-2018-10879)

  - kernel: stack-out-of-bounds write in ext4_update_inline_data function (CVE-2018-10880)

  - kernel: out-of-bound access in ext4_get_group_info() when mounting and operating a crafted ext4 image     (CVE-2018-10881)

  - kernel: stack-out-of-bounds write infs/jbd2/transaction.c (CVE-2018-10882)

  - kernel: stack-out-of-bounds write in jbd2_journal_dirty_metadata function (CVE-2018-10883)

  - kernel: incorrect memory bounds check in drivers/cdrom/cdrom.c (CVE-2018-10940)

  - kernel: Stack-based buffer overflow in drivers/scsi/sr_ioctl.c allows denial of service or other     unspecified impact (CVE-2018-11506)

  - kernel: NULL pointer dereference if close and fchownat system calls share a socket file descriptor     (CVE-2018-12232)

  - kernel: Missing check in fs/inode.c:inode_init_owner() does not clear SGID bit on non-directories for non-     members (CVE-2018-13405)

  - kernel: crash (possible privesc) in kernel crypto api. (CVE-2018-14619)

  - kernel: a bug in ip_frag_reasm() can cause a crash in ip_do_fragment() (CVE-2018-14641)

  - kernel: Improper validation in bnx2x network card driver can allow for denial of service attacks via     crafted packet (CVE-2018-1000026)

  - kernel: NULL pointer dereference on OOM kill of large mlocked process (CVE-2018-1000200)

  - kernel: Infoleak caused by incorrect handling of the SG_IO ioctl (CVE-2018-1000204)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The SUSE Linux Enterprise 12 SP2 LTSS kernel was updated to receive various security and bugfixes.

CVE-2018-10853: A flaw was found in the way the KVM hypervisor emulated instructions such as sgdt/sidt/fxsave/fxrstor. It did not check current privilege(CPL) level while emulating unprivileged instructions. An unprivileged guest user/process could use this flaw to potentially escalate privileges inside guest (bnc#1097104).

CVE-2018-10876: A flaw was found in Linux kernel in the ext4 filesystem code. A use-after-free is possible in ext4_ext_remove_space() function when mounting and operating a crafted ext4 image. (bnc#1099811)

CVE-2018-10877: Linux kernel ext4 filesystem is vulnerable to an out-of-bound access in the ext4_ext_drop_refs() function when operating on a crafted ext4 filesystem image. (bnc#1099846)

CVE-2018-10878: A flaw was found in the Linux kernel's ext4 filesystem. A local user can cause an out-of-bounds write and a denial of service or unspecified other impact is possible by mounting and operating a crafted ext4 filesystem image. (bnc#1099813)

CVE-2018-10879: A flaw was found in the Linux kernel's ext4 filesystem. A local user can cause a use-after-free in ext4_xattr_set_entry function and a denial of service or unspecified other impact may occur by renaming a file in a crafted ext4 filesystem image. (bnc#1099844)

CVE-2018-10880: Linux kernel is vulnerable to a stack-out-of-bounds write in the ext4 filesystem code when mounting and writing to a crafted ext4 image in ext4_update_inline_data(). An attacker could use this to cause a system crash and a denial of service. (bnc#1099845)

CVE-2018-10881: A flaw was found in the Linux kernel's ext4 filesystem. A local user can cause an out-of-bound access in ext4_get_group_info function, a denial of service, and a system crash by mounting and operating on a crafted ext4 filesystem image.
(bnc#1099864)

CVE-2018-10882: A flaw was found in the Linux kernel's ext4 filesystem. A local user can cause an out-of-bound write in in fs/jbd2/transaction.c code, a denial of service, and a system crash by unmounting a crafted ext4 filesystem image. (bnc#1099849)

CVE-2018-10883: A flaw was found in the Linux kernel's ext4 filesystem. A local user can cause an out-of-bounds write in jbd2_journal_dirty_metadata(), a denial of service, and a system crash by mounting and operating on a crafted ext4 filesystem image.
(bnc#1099863)

CVE-2018-10902: It was found that the raw midi kernel driver did not protect against concurrent access which leads to a double realloc (double free) in snd_rawmidi_input_params() and snd_rawmidi_output_status() which are part of snd_rawmidi_ioctl() handler in rawmidi.c file. A malicious local attacker could possibly use this for privilege escalation (bnc#1105322).

CVE-2018-10938: A crafted network packet sent remotely by an attacker may force the kernel to enter an infinite loop in the cipso_v4_optptr() function in net/ipv4/cipso_ipv4.c leading to a denial-of-service. A certain non-default configuration of LSM (Linux Security Module) and NetLabel should be set up on a system before an attacker could leverage this flaw (bnc#1106016).

CVE-2018-10940: The cdrom_ioctl_media_changed function in drivers/cdrom/cdrom.c allowed local attackers to use a incorrect bounds check in the CDROM driver CDROM_MEDIA_CHANGED ioctl to read out kernel memory (bnc#1092903).

CVE-2018-12896: An Integer Overflow in kernel/time/posix-timers.c in the POSIX timer code is caused by the way the overrun accounting works. Depending on interval and expiry time values, the overrun can be larger than INT_MAX, but the accounting is int based. This basically made the accounting values, which are visible to user space via timer_getoverrun(2) and siginfo::si_overrun, random. For example, a local user can cause a denial of service (signed integer overflow) via crafted mmap, futex, timer_create, and timer_settime system calls (bnc#1099922).

CVE-2018-13093: There is a NULL pointer dereference and panic in lookup_slow() on a NULL inode->i_ops pointer when doing pathwalks on a corrupted xfs image. This occurs because of a lack of proper validation that cached inodes are free during allocation (bnc#1100001).

CVE-2018-13094: An OOPS may occur for a corrupted xfs image after xfs_da_shrink_inode() is called with a NULL bp (bnc#1100000).

CVE-2018-13095: A denial of service (memory corruption and BUG) can occur for a corrupted xfs image upon encountering an inode that is in extent format, but has more extents than fit in the inode fork (bnc#1099999).

CVE-2018-14617: There is a NULL pointer dereference and panic in hfsplus_lookup() in fs/hfsplus/dir.c when opening a file (that is purportedly a hard link) in an hfs+ filesystem that has malformed catalog data, and is mounted read-only without a metadata directory (bnc#1102870).

CVE-2018-14678: The xen_failsafe_callback entry point in arch/x86/entry/entry_64.S did not properly maintain RBX, which allowed local users to cause a denial of service (uninitialized memory usage and system crash). Within Xen, 64-bit x86 PV Linux guest OS users can trigger a guest OS crash or possibly gain privileges (bnc#1102715).

CVE-2018-15572: The spectre_v2_select_mitigation function in arch/x86/kernel/cpu/bugs.c did not always fill RSB upon a context switch, which made it easier for attackers to conduct userspace-userspace spectreRSB attacks (bnc#1102517 bnc#1105296).

CVE-2018-15594: arch/x86/kernel/paravirt.c mishandled certain indirect calls, which made it easier for attackers to conduct Spectre-v2 attacks against paravirtual guests (bnc#1105348).

CVE-2018-16276: Local attackers could use user access read/writes with incorrect bounds checking in the yurex USB driver to crash the kernel or potentially escalate privileges (bnc#1106095).

CVE-2018-16658: An information leak in cdrom_ioctl_drive_status in drivers/cdrom/cdrom.c could be used by local attackers to read kernel memory because a cast from unsigned long to int interferes with bounds checking. This is similar to CVE-2018-10940 (bnc#1107689).

CVE-2018-17182: The vmacache_flush_all function in mm/vmacache.c mishandled sequence number overflows. An attacker can trigger a use-after-free (and possibly gain privileges) via certain thread creation, map, unmap, invalidation, and dereference operations (bnc#1108399).

CVE-2018-6554: Memory leak in the irda_bind function in net/irda/af_irda.c and later in drivers/staging/irda/net/af_irda.c allowed local users to cause a denial of service (memory consumption) by repeatedly binding an AF_IRDA socket (bnc#1106509).

CVE-2018-6555: The irda_setsockopt function in net/irda/af_irda.c and later in drivers/staging/irda/net/af_irda.c allowed local users to cause a denial of service (ias_object use-after-free and system crash) or possibly have unspecified other impact via an AF_IRDA socket (bnc#1106511).

CVE-2018-7757: Memory leak in the sas_smp_get_phy_events function in drivers/scsi/libsas/sas_expander.c allowed local users to cause a denial of service (memory consumption) via many read accesses to files in the /sys/class/sas_phy directory, as demonstrated by the /sys/class/sas_phy/phy-1:0:12/invalid_dword_count file (bnc#1084536).

CVE-2018-9363: A buffer overflow in bluetooth HID report processing could be used by malicious bluetooth devices to crash the kernel or potentially execute code (bnc#1105292). The following security bugs were fixed :

CVE-2018-7480: The blkcg_init_queue function in block/blk-cgroup.c allowed local users to cause a denial of service (double free) or possibly have unspecified other impact by triggering a creation failure (bnc#1082863).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The SUSE Linux Enterprise 12 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2018-14634: Prevent integer overflow in create_elf_tables that allowed a local attacker to exploit this vulnerability via a SUID-root binary and obtain full root privileges (bsc#1108912)

CVE-2018-14617: Prevent NULL pointer dereference and panic in hfsplus_lookup() when opening a file (that is purportedly a hard link) in an hfs+ filesystem that has malformed catalog data, and is mounted read-only without a metadata directory (bsc#1102870)

CVE-2018-16276: Incorrect bounds checking in the yurex USB driver in yurex_read allowed local attackers to use user access read/writes to crash the kernel or potentially escalate privileges (bsc#1106095)

CVE-2018-12896: Prevent integer overflow in the POSIX timer code that was caused by the way the overrun accounting works. Depending on interval and expiry time values, the overrun can be larger than INT_MAX, but the accounting is int based. This basically made the accounting values, which are visible to user space via timer_getoverrun(2) and siginfo::si_overrun, random. This allowed a local user to cause a denial of service (signed integer overflow) via crafted mmap, futex, timer_create, and timer_settime system calls (bnc#1099922)

CVE-2018-13093: Prevent NULL pointer dereference and panic in lookup_slow() on a NULL inode->i_ops pointer when doing pathwalks on a corrupted xfs image. This occured because of a lack of proper validation that cached inodes are free during allocation (bnc#1100001)

CVE-2018-10940: The cdrom_ioctl_media_changed function allowed local attackers to use a incorrect bounds check in the CDROM driver CDROM_MEDIA_CHANGED ioctl to read out kernel memory (bsc#1092903)

CVE-2018-16658: Prevent information leak in cdrom_ioctl_drive_status that could have been used by local attackers to read kernel memory (bnc#1107689)

CVE-2018-6555: The irda_setsockopt function allowed local users to cause a denial of service (ias_object use-after-free and system crash) or possibly have unspecified other impact via an AF_IRDA socket (bnc#1106511)

CVE-2018-6554: Prevent memory leak in the irda_bind function that allowed local users to cause a denial of service (memory consumption) by repeatedly binding an AF_IRDA socket (bnc#1106509)

CVE-2018-10853: The KVM hypervisor did not check current privilege(CPL) level while emulating unprivileged instructions. An unprivileged guest user/process could have used this flaw to potentially escalate privileges inside guest (bsc#1097104)

CVE-2018-10902: Protect against concurrent access to prevent double realloc (double free) in snd_rawmidi_input_params() and snd_rawmidi_output_status(). A malicious local attacker could have used this for privilege escalation (bnc#1105322).

CVE-2018-10879: A local user could have caused a use-after-free in ext4_xattr_set_entry function and a denial of service or unspecified other impact by renaming a file in a crafted ext4 filesystem image (bsc#1099844)

CVE-2018-10883: A local user could have caused an out-of-bounds write in jbd2_journal_dirty_metadata(), a denial of service, and a system crash by mounting and operating on a crafted ext4 filesystem image (bsc#1099863)

CVE-2018-10880: Prevent stack-out-of-bounds write in the ext4 filesystem code when mounting and writing to a crafted ext4 image in ext4_update_inline_data(). An attacker could have used this to cause a system crash and a denial of service (bsc#1099845)

CVE-2018-10882: A local user could have caused an out-of-bound write, a denial of service, and a system crash by unmounting a crafted ext4 filesystem image (bsc#1099849)

CVE-2018-10881: A local user could have caused an out-of-bound access in ext4_get_group_info function, a denial of service, and a system crash by mounting and operating on a crafted ext4 filesystem image (bsc#1099864)

CVE-2018-10877: Prevent out-of-bound access in the ext4_ext_drop_refs() function when operating on a crafted ext4 filesystem image (bsc#1099846)

CVE-2018-10876: A use-after-free was possible in ext4_ext_remove_space() function when mounting and operating a crafted ext4 image (bsc#1099811)

CVE-2018-10878: A local user could have caused an out-of-bounds write and a denial of service or unspecified other impact by mounting and operating a crafted ext4 filesystem image (bsc#1099813)

CVE-2018-17182: An issue was discovered in the Linux kernel The vmacache_flush_all function in mm/vmacache.c mishandled sequence number overflows. An attacker can trigger a use-after-free (and possibly gain privileges) via certain thread creation, map, unmap, invalidation, and dereference operations (bnc#1108399).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The SUSE Linux Enterprise 12 SP1 kernel was updated receive various security and bugfixes.

The following security bugs were fixed :

CVE-2018-14634: Prevent integer overflow in create_elf_tables that allowed a local attacker to exploit this vulnerability via a SUID-root binary and obtain full root privileges (bsc#1108912)

CVE-2018-14617: Prevent NULL pointer dereference and panic in hfsplus_lookup() when opening a file (that is purportedly a hard link) in an hfs+ filesystem that has malformed catalog data, and is mounted read-only without a metadata directory (bsc#1102870)

CVE-2018-16276: Incorrect bounds checking in the yurex USB driver in yurex_read allowed local attackers to use user access read/writes to crash the kernel or potentially escalate privileges (bsc#1106095)

CVE-2018-12896: Prevent integer overflow in the POSIX timer code that was caused by the way the overrun accounting works. Depending on interval and expiry time values, the overrun can be larger than INT_MAX, but the accounting is int based. This basically made the accounting values, which are visible to user space via timer_getoverrun(2) and siginfo::si_overrun, random. This allowed a local user to cause a denial of service (signed integer overflow) via crafted mmap, futex, timer_create, and timer_settime system calls (bnc#1099922)

CVE-2018-13093: Prevent NULL pointer dereference and panic in lookup_slow() on a NULL inode->i_ops pointer when doing pathwalks on a corrupted xfs image. This occured because of a lack of proper validation that cached inodes are free during allocation (bnc#1100001)

CVE-2018-10940: The cdrom_ioctl_media_changed function allowed local attackers to use a incorrect bounds check in the CDROM driver CDROM_MEDIA_CHANGED ioctl to read out kernel memory (bsc#1092903)

CVE-2018-16658: Prevent information leak in cdrom_ioctl_drive_status that could have been used by local attackers to read kernel memory (bnc#1107689)

CVE-2018-6555: The irda_setsockopt function allowed local users to cause a denial of service (ias_object use-after-free and system crash) or possibly have unspecified other impact via an AF_IRDA socket (bnc#1106511)

CVE-2018-6554: Prevent memory leak in the irda_bind function that allowed local users to cause a denial of service (memory consumption) by repeatedly binding an AF_IRDA socket (bnc#1106509)

CVE-2018-10902: Protect against concurrent access to prevent double realloc (double free) in snd_rawmidi_input_params() and snd_rawmidi_output_status(). A malicious local attacker could have used this for privilege escalation (bnc#1105322)

CVE-2018-10879: A local user could have caused a use-after-free in ext4_xattr_set_entry function and a denial of service or unspecified other impact by renaming a file in a crafted ext4 filesystem image (bsc#1099844)

CVE-2018-10883: A local user could have caused an out-of-bounds write in jbd2_journal_dirty_metadata(), a denial of service, and a system crash by mounting and operating on a crafted ext4 filesystem image (bsc#1099863)

CVE-2018-10880: Prevent stack-out-of-bounds write in the ext4 filesystem code when mounting and writing to a crafted ext4 image in ext4_update_inline_data(). An attacker could have used this to cause a system crash and a denial of service (bsc#1099845)

CVE-2018-10882: A local user could have caused an out-of-bound write, a denial of service, and a system crash by unmounting a crafted ext4 filesystem image (bsc#1099849)

CVE-2018-10881: A local user could have caused an out-of-bound access in ext4_get_group_info function, a denial of service, and a system crash by mounting and operating on a crafted ext4 filesystem image (bsc#1099864)

CVE-2018-10877: Prevent out-of-bound access in the ext4_ext_drop_refs() function when operating on a crafted ext4 filesystem image (bsc#1099846)

CVE-2018-10876: A use-after-free was possible in ext4_ext_remove_space() function when mounting and operating a crafted ext4 image (bsc#1099811)

CVE-2018-10878: A local user could have caused an out-of-bounds write and a denial of service or unspecified other impact by mounting and operating a crafted ext4 filesystem image (bsc#1099813)

CVE-2018-10853: The KVM hypervisor did not check current privilege(CPL) level while emulating unprivileged instructions. An unprivileged guest user/process could have used this flaw to potentially escalate privileges inside guest (bsc#1097104).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The SUSE Linux Enterprise 12 SP3 azure kernel was updated to 4.4.155 to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2018-13093: Prevent NULL pointer dereference and panic in lookup_slow() on a NULL inode->i_ops pointer when doing pathwalks on a corrupted xfs image. This occured because of a lack of proper validation that cached inodes are free during allocation (bnc#1100001)

CVE-2018-13095: Prevent denial of service (memory corruption and BUG) that could have occurred for a corrupted xfs image upon encountering an inode that is in extent format, but has more extents than fit in the inode fork (bnc#1099999)

CVE-2018-13094: Prevent OOPS that may have occured for a corrupted xfs image after xfs_da_shrink_inode() is called with a NULL bp (bnc#1100000)

CVE-2018-12896: Prevent integer overflow in the POSIX timer code that was caused by the way the overrun accounting works. Depending on interval and expiry time values, the overrun can be larger than INT_MAX, but the accounting is int based. This basically made the accounting values, which are visible to user space via timer_getoverrun(2) and siginfo::si_overrun, random. This allowed a local user to cause a denial of service (signed integer overflow) via crafted mmap, futex, timer_create, and timer_settime system calls (bnc#1099922)

CVE-2018-16658: Prevent information leak in cdrom_ioctl_drive_status that could have been used by local attackers to read kernel memory (bnc#1107689)

CVE-2018-10940: The cdrom_ioctl_media_changed function allowed local attackers to use a incorrect bounds check in the CDROM driver CDROM_MEDIA_CHANGED ioctl to read out kernel memory (bsc#1092903)

CVE-2018-6555: The irda_setsockopt function allowed local users to cause a denial of service (ias_object use-after-free and system crash) or possibly have unspecified other impact via an AF_IRDA socket (bnc#1106511)

CVE-2018-6554: Prevent memory leak in the irda_bind function that allowed local users to cause a denial of service (memory consumption) by repeatedly binding an AF_IRDA socket (bnc#1106509)

CVE-2018-1129: A flaw was found in the way signature calculation was handled by cephx authentication protocol. An attacker having access to ceph cluster network who is able to alter the message payload was able to bypass signature checks done by cephx protocol (bnc#1096748)

CVE-2018-1128: It was found that cephx authentication protocol did not verify ceph clients correctly and was vulnerable to replay attack. Any attacker having access to ceph cluster network who is able to sniff packets on network can use this vulnerability to authenticate with ceph service and perform actions allowed by ceph service (bnc#1096748)

CVE-2018-10938: A crafted network packet sent remotely by an attacker forced the kernel to enter an infinite loop in the cipso_v4_optptr() function leading to a denial-of-service (bnc#1106016)

CVE-2018-15572: The spectre_v2_select_mitigation function did not always fill RSB upon a context switch, which made it easier for attackers to conduct userspace-userspace spectreRSB attacks (bnc#1102517)

CVE-2018-10902: Protect against concurrent access to prevent double realloc (double free) in snd_rawmidi_input_params() and snd_rawmidi_output_status(). A malicious local attacker could have used this for privilege escalation (bnc#1105322).

CVE-2018-9363: Prevent buffer overflow in hidp_process_report (bsc#1105292)

CVE-2018-10883: A local user could have caused an out-of-bounds write in jbd2_journal_dirty_metadata(), a denial of service, and a system crash by mounting and operating on a crafted ext4 filesystem image (bsc#1099863)

CVE-2018-10879: A local user could have caused a use-after-free in ext4_xattr_set_entry function and a denial of service or unspecified other impact by renaming a file in a crafted ext4 filesystem image (bsc#1099844)

CVE-2018-10878: A local user could have caused an out-of-bounds write and a denial of service or unspecified other impact by mounting and operating a crafted ext4 filesystem image (bsc#1099813)

CVE-2018-10876: A use-after-free was possible in ext4_ext_remove_space() function when mounting and operating a crafted ext4 image (bsc#1099811)

CVE-2018-10877: Prevent out-of-bound access in the ext4_ext_drop_refs() function when operating on a crafted ext4 filesystem image (bsc#1099846)

CVE-2018-10881: A local user could have caused an out-of-bound access in ext4_get_group_info function, a denial of service, and a system crash by mounting and operating on a crafted ext4 filesystem image (bsc#1099864)

CVE-2018-10882: A local user could have caused an out-of-bound write, a denial of service, and a system crash by unmounting a crafted ext4 filesystem image (bsc#1099849)

CVE-2018-10880: Prevent stack-out-of-bounds write in the ext4 filesystem code when mounting and writing to a crafted ext4 image in ext4_update_inline_data(). An attacker could have used this to cause a system crash and a denial of service (bsc#1099845)

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The SUSE Linux Enterprise 12 SP3 kernel was updated to 4.4.155 to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2018-13093: Prevent NULL pointer dereference and panic in lookup_slow() on a NULL inode->i_ops pointer when doing pathwalks on a corrupted xfs image. This occured because of a lack of proper validation that cached inodes are free during allocation (bnc#1100001).

CVE-2018-13095: Prevent denial of service (memory corruption and BUG) that could have occurred for a corrupted xfs image upon encountering an inode that is in extent format, but has more extents than fit in the inode fork (bnc#1099999).

CVE-2018-13094: Prevent OOPS that may have occured for a corrupted xfs image after xfs_da_shrink_inode() is called with a NULL bp (bnc#1100000).

CVE-2018-12896: Prevent integer overflow in the POSIX timer code that was caused by the way the overrun accounting works. Depending on interval and expiry time values, the overrun can be larger than INT_MAX, but the accounting is int based. This basically made the accounting values, which are visible to user space via timer_getoverrun(2) and siginfo::si_overrun, random. This allowed a local user to cause a denial of service (signed integer overflow) via crafted mmap, futex, timer_create, and timer_settime system calls (bnc#1099922).

CVE-2018-16658: Prevent information leak in cdrom_ioctl_drive_status that could have been used by local attackers to read kernel memory (bnc#1107689).

CVE-2018-6555: The irda_setsockopt function allowed local users to cause a denial of service (ias_object use-after-free and system crash) or possibly have unspecified other impact via an AF_IRDA socket (bnc#1106511).

CVE-2018-6554: Prevent memory leak in the irda_bind function that allowed local users to cause a denial of service (memory consumption) by repeatedly binding an AF_IRDA socket (bnc#1106509).

CVE-2018-1129: A flaw was found in the way signature calculation was handled by cephx authentication protocol. An attacker having access to ceph cluster network who is able to alter the message payload was able to bypass signature checks done by cephx protocol (bnc#1096748).

CVE-2018-1128: It was found that cephx authentication protocol did not verify ceph clients correctly and was vulnerable to replay attack. Any attacker having access to ceph cluster network who is able to sniff packets on network can use this vulnerability to authenticate with ceph service and perform actions allowed by ceph service (bnc#1096748).

CVE-2018-10938: A crafted network packet sent remotely by an attacker forced the kernel to enter an infinite loop in the cipso_v4_optptr() function leading to a denial-of-service (bnc#1106016).

CVE-2018-15572: The spectre_v2_select_mitigation function did not always fill RSB upon a context switch, which made it easier for attackers to conduct userspace-userspace spectreRSB attacks (bnc#1102517).

CVE-2018-10902: Protect against concurrent access to prevent double realloc (double free) in snd_rawmidi_input_params() and snd_rawmidi_output_status(). A malicious local attacker could have used this for privilege escalation (bnc#1105322 1105323).

CVE-2018-9363: Prevent buffer overflow in hidp_process_report (bsc#1105292)

CVE-2018-10883: A local user could have caused an out-of-bounds write in jbd2_journal_dirty_metadata(), a denial of service, and a system crash by mounting and operating on a crafted ext4 filesystem image (bsc#1099863).

CVE-2018-10879: A local user could have caused a use-after-free in ext4_xattr_set_entry function and a denial of service or unspecified other impact by renaming a file in a crafted ext4 filesystem image (bsc#1099844).

CVE-2018-10878: A local user could have caused an out-of-bounds write and a denial of service or unspecified other impact by mounting and operating a crafted ext4 filesystem image (bsc#1099813).

CVE-2018-10876: A use-after-free was possible in ext4_ext_remove_space() function when mounting and operating a crafted ext4 image (bsc#1099811).

CVE-2018-10877: Prevent out-of-bound access in the ext4_ext_drop_refs() function when operating on a crafted ext4 filesystem image (bsc#1099846).

CVE-2018-10881: A local user could have caused an out-of-bound access in ext4_get_group_info function, a denial of service, and a system crash by mounting and operating on a crafted ext4 filesystem image (bsc#1099864).

CVE-2018-10882: A local user could have caused an out-of-bound write, a denial of service, and a system crash by unmounting a crafted ext4 filesystem image (bsc#1099849).

CVE-2018-10880: Prevent stack-out-of-bounds write in the ext4 filesystem code when mounting and writing to a crafted ext4 image in ext4_update_inline_data(). An attacker could have used this to cause a system crash and a denial of service (bsc#1099845).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3753-2 advisory.

    USN-3753-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the     corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu     14.04 LTS.

    It was discovered that the generic SCSI driver in the Linux kernel did not properly enforce permissions on     kernel memory access. A local attacker could use this to expose sensitive information or possibly elevate     privileges. (CVE-2017-13168)

    Wen Xu discovered that a use-after-free vulnerability existed in the ext4 filesystem implementation in the     Linux kernel. An attacker could use this to construct a malicious ext4 image that, when mounted, could     cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10876,     CVE-2018-10879)

    Wen Xu discovered that a buffer overflow existed in the ext4 filesystem implementation in the Linux     kernel. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a     denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10877)

    Wen Xu discovered that an out-of-bounds write vulnerability existed in the ext4 filesystem implementation     in the Linux kernel. An attacker could use this to construct a malicious ext4 image that, when mounted,     could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10878,     CVE-2018-10882)

    Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly keep meta-     data information consistent in some situations. An attacker could use this to construct a malicious ext4     image that, when mounted, could cause a denial of service (system crash). (CVE-2018-10881)

    Shankara Pailoor discovered that the JFS filesystem implementation in the Linux kernel contained a buffer     overflow when handling extended attributes. A local attacker could use this to cause a denial of service     (system crash) or possibly execute arbitrary code. (CVE-2018-12233)

    Wen Xu discovered that the XFS filesystem implementation in the Linux kernel did not properly handle an     error condition with a corrupted xfs image. An attacker could use this to construct a malicious xfs image     that, when mounted, could cause a denial of service (system crash). (CVE-2018-13094)

    It was discovered that the Linux kernel did not properly handle setgid file creation when performed by a     non-member of the group. A local attacker could use this to gain elevated privileges. (CVE-2018-13405)

    Silvio Cesare discovered that the generic VESA frame buffer driver in the Linux kernel contained an     integer overflow. A local attacker could use this to cause a denial of service (system crash) or possibly     execute arbitrary code. (CVE-2018-13406)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3753-1 advisory.

    It was discovered that the generic SCSI driver in the Linux kernel did not properly enforce permissions on     kernel memory access. A local attacker could use this to expose sensitive information or possibly elevate     privileges. (CVE-2017-13168)

    Wen Xu discovered that a use-after-free vulnerability existed in the ext4 filesystem implementation in the     Linux kernel. An attacker could use this to construct a malicious ext4 image that, when mounted, could     cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10876,     CVE-2018-10879)

    Wen Xu discovered that a buffer overflow existed in the ext4 filesystem implementation in the Linux     kernel. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a     denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10877)

    Wen Xu discovered that an out-of-bounds write vulnerability existed in the ext4 filesystem implementation     in the Linux kernel. An attacker could use this to construct a malicious ext4 image that, when mounted,     could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10878,     CVE-2018-10882)

    Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly keep meta-     data information consistent in some situations. An attacker could use this to construct a malicious ext4     image that, when mounted, could cause a denial of service (system crash). (CVE-2018-10881)

    Shankara Pailoor discovered that the JFS filesystem implementation in the Linux kernel contained a buffer     overflow when handling extended attributes. A local attacker could use this to cause a denial of service     (system crash) or possibly execute arbitrary code. (CVE-2018-12233)

    Wen Xu discovered that the XFS filesystem implementation in the Linux kernel did not properly handle an     error condition with a corrupted xfs image. An attacker could use this to construct a malicious xfs image     that, when mounted, could cause a denial of service (system crash). (CVE-2018-13094)

    It was discovered that the Linux kernel did not properly handle setgid file creation when performed by a     non-member of the group. A local attacker could use this to gain elevated privileges. (CVE-2018-13405)

    Silvio Cesare discovered that the generic VESA frame buffer driver in the Linux kernel contained an     integer overflow. A local attacker could use this to cause a denial of service (system crash) or possibly     execute arbitrary code. (CVE-2018-13406)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The openSUSE Leap 42.3 kernel was updated to 4.4.143 to receive various security and bugfixes.

The following security bugs were fixed :

  - CVE-2017-18344: The timer_create syscall implementation     in kernel/time/posix-timers.c didn't properly validate     the sigevent->sigev_notify field, which leads to     out-of-bounds access in the show_timer function (called     when /proc/$PID/timers is read). This allowed userspace     applications to read arbitrary kernel memory (on a     kernel built with CONFIG_POSIX_TIMERS and     CONFIG_CHECKPOINT_RESTORE) (bnc#1102851 bnc#1103580).

  - CVE-2018-10876: A flaw was found in Linux kernel in the     ext4 filesystem code. A use-after-free is possible in     ext4_ext_remove_space() function when mounting and     operating a crafted ext4 image. (bnc#1099811)

  - CVE-2018-10877: Linux kernel ext4 filesystem is     vulnerable to an out-of-bound access in the     ext4_ext_drop_refs() function when operating on a     crafted ext4 filesystem image. (bnc#1099846)

  - CVE-2018-10878: A flaw was found in the ext4 filesystem.
    A local user can cause an out-of-bounds write and a     denial of service or unspecified other impact is     possible by mounting and operating a crafted ext4     filesystem image. (bnc#1099813)

  - CVE-2018-10879: A flaw was found in the ext4 filesystem.
    A local user can cause a use-after-free in     ext4_xattr_set_entry function and a denial of service or     unspecified other impact may occur by renaming a file in     a crafted ext4 filesystem image. (bnc#1099844)

  - CVE-2018-10880: Linux kernel is vulnerable to a     stack-out-of-bounds write in the ext4 filesystem code     when mounting and writing to a crafted ext4 image in     ext4_update_inline_data(). An attacker could use this to     cause a system crash and a denial of service.
    (bnc#1099845)

  - CVE-2018-10881: A flaw was found in the ext4 filesystem.
    A local user can cause an out-of-bound access in     ext4_get_group_info function, a denial of service, and a     system crash by mounting and operating on a crafted ext4     filesystem image. (bnc#1099864)

  - CVE-2018-10882: A flaw was found in the ext4 filesystem.
    A local user can cause an out-of-bound write in in     fs/jbd2/transaction.c code, a denial of service, and a     system crash by unmounting a crafted ext4 filesystem     image. (bnc#1099849)

  - CVE-2018-10883: A flaw was found in the ext4 filesystem.
    A local user can cause an out-of-bounds write in     jbd2_journal_dirty_metadata(), a denial of service, and     a system crash by mounting and operating on a crafted     ext4 filesystem image. (bnc#1099863)

  - CVE-2018-14734: drivers/infiniband/core/ucma.c allowed     ucma_leave_multicast to access a certain data structure     after a cleanup step in ucma_process_join, which allowed     attackers to cause a denial of service (use-after-free)     (bnc#1103119).

  - CVE-2018-3620: Systems with microprocessors utilizing     speculative execution and address translations may allow     unauthorized disclosure of information residing in the     L1 data cache to an attacker with local user access via     a terminal page fault and a side-channel analysis     (bnc#1087081 1089343 ).

  - CVE-2018-3646: Systems with microprocessors utilizing     speculative execution and address translations may allow     unauthorized disclosure of information residing in the     L1 data cache to an attacker with local user access with     guest OS privilege via a terminal page fault and a     side-channel analysis (bnc#1089343 1104365).

  - CVE-2018-5390 aka 'SegmentSmack': The Linux kernel could     be forced to make very expensive calls to     tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() for     every incoming packet which can lead to a denial of     service (bnc#1102340).

  - CVE-2018-5391 aka 'FragmentSmack': A flaw in the IP     packet reassembly could be used by remote attackers to     consume lots of CPU time (bnc#1103097).

The following non-security bugs were fixed :

  - Add support for 5,25,50, and 100G to 802.3ad bonding     driver (bsc#1096978)

  - ahci: Disable LPM on Lenovo 50 series laptops with a too     old BIOS (bnc#1012382).

  - arm64: do not open code page table entry creation     (bsc#1102197).

  - arm64: kpti: Use early_param for kpti= command-line     option (bsc#1102188).

  - arm64: Make sure permission updates happen for pmd/pud     (bsc#1102197).

  - atm: zatm: Fix potential Spectre v1 (bnc#1012382).

  - bcm63xx_enet: correct clock usage (bnc#1012382).

  - bcm63xx_enet: do not write to random DMA channel on     BCM6345 (bnc#1012382).

  - blkcg: simplify statistic accumulation code     (bsc#1082979).

  - block: copy ioprio in __bio_clone_fast() (bsc#1082653).

  - block/swim: Fix array bounds check (bsc#1082979).

  - bpf: fix loading of BPF_MAXINSNS sized programs     (bsc#1012382).

  - bpf, x64: fix memleak when not converging after image     (bsc#1012382).

  - btrfs: Do not remove block group still has pinned down     bytes (bsc#1086457).

  - cachefiles: Fix missing clear of the     CACHEFILES_OBJECT_ACTIVE flag (bsc#1099858).

  - cachefiles: Fix refcounting bug in backing-file read     monitoring (bsc#1099858).

  - cachefiles: Wait rather than BUG'ing on 'Unexpected     object collision' (bsc#1099858).

  - cifs: fix bad/NULL ptr dereferencing in     SMB2_sess_setup() (bsc#1090123).

  - compiler, clang: always inline when     CONFIG_OPTIMIZE_INLINING is disabled (bnc#1012382).

  - compiler, clang: properly override 'inline' for clang     (bnc#1012382).

  - compiler, clang: suppress warning for unused static     inline functions (bnc#1012382).

  - compiler-gcc.h: Add __attribute__((gnu_inline)) to all     inline declarations (bnc#1012382).

  - cpu/hotplug: Add sysfs state interface (bsc#1089343).

  - cpu/hotplug: Provide knobs to control SMT (bsc#1089343).

  - cpu/hotplug: Split do_cpu_down() (bsc#1089343).

  - crypto: crypto4xx - fix crypto4xx_build_pdr,     crypto4xx_build_sdr leak (bnc#1012382).

  - crypto: crypto4xx - remove bad list_del (bnc#1012382).

  - dm thin metadata: remove needless work from
    __commit_transaction (bsc#1082979).

  - drm/msm: Fix possible null dereference on failure of     get_pages() (bsc#1102394).

  - drm: re-enable error handling (bsc#1103884).

  - esp6: fix memleak on error path in esp6_input     (git-fixes).

  - ext4: check for allocation block validity with block     group locked (bsc#1104495).

  - ext4: do not update s_last_mounted of a frozen fs     (bsc#1101841).

  - ext4: factor out helper ext4_sample_last_mounted()     (bsc#1101841).

  - ext4: fix check to prevent initializing reserved inodes     (bsc#1104319).

  - ext4: fix false negatives *and* false positives in     ext4_check_descriptors() (bsc#1103445).

  - ext4: fix inline data updates with checksums enabled     (bsc#1104494).

  - fscache: Allow cancelled operations to be enqueued     (bsc#1099858).

  - fscache: Fix reference overput in     fscache_attach_object() error handling (bsc#1099858).

  - genirq: Make force irq threading setup more robust     (bsc#1082979).

  - hid: usbhid: add quirk for innomedia INNEX GENESIS/ATARI     adapter (bnc#1012382).

  - ib/isert: fix T10-pi check mask setting (bsc#1082979).

  - ibmasm: do not write out of bounds in read handler     (bnc#1012382).

  - ibmvnic: Fix error recovery on login failure     (bsc#1101789).

  - ibmvnic: Remove code to request error information     (bsc#1104174).

  - ibmvnic: Revise RX/TX queue error messages     (bsc#1101331).

  - ibmvnic: Update firmware error reporting with cause     string (bsc#1104174).

  - iw_cxgb4: correctly enforce the max reg_mr depth     (bnc#1012382).

  - kabi protect includes in include/linux/inet.h     (bsc#1095643).

  - kabi protect net/core/utils.c includes (bsc#1095643).

  - kABI: protect struct loop_device (kabi).

  - kABI: reintroduce __static_cpu_has_safe (kabi).

  - Kbuild: fix # escaping in .cmd files for future Make     (bnc#1012382).

  - keys: DNS: fix parsing multiple options (bnc#1012382).

  - kvm: arm/arm64: Drop resource size check for GICV window     (bsc#1102215).

  - kvm: arm/arm64: Set dist->spis to NULL after kfree     (bsc#1102214).

  - libata: do not try to pass through NCQ commands to     non-NCQ devices (bsc#1082979).

  - loop: add recursion validation to LOOP_CHANGE_FD     (bnc#1012382).

  - loop: remember whether sysfs_create_group() was done     (bnc#1012382).

  - mmc: dw_mmc: fix card threshold control configuration     (bsc#1102203).

  - mm: check VMA flags to avoid invalid PROT_NONE NUMA     balancing (bsc#1097771).

  - net: cxgb3_main: fix potential Spectre v1 (bnc#1012382).

  - net: dccp: avoid crash in ccid3_hc_rx_send_feedback()     (bnc#1012382).

  - net: dccp: switch rx_tstamp_last_feedback to monotonic     clock (bnc#1012382).

  - netfilter: ebtables: reject non-bridge targets     (bnc#1012382).

  - netfilter: nf_queue: augment nfqa_cfg_policy     (bnc#1012382).

  - netfilter: x_tables: initialise match/target check     parameter struct (bnc#1012382).

  - net/mlx5: Fix command interface race in polling mode     (bnc#1012382).

  - net/mlx5: Fix incorrect raw command length parsing     (bnc#1012382).

  - net: mvneta: fix the Rx desc DMA address in the Rx path     (bsc#1102207).

  - net/nfc: Avoid stalls when nfc_alloc_send_skb() returned     NULL (bnc#1012382).

  - net: off by one in inet6_pton() (bsc#1095643).

  - net: phy: marvell: Use strlcpy() for     ethtool::get_strings (bsc#1102205).

  - net_sched: blackhole: tell upper qdisc about dropped     packets (bnc#1012382).

  - net: sungem: fix rx checksum support (bnc#1012382).

  - net/utils: generic inet_pton_with_scope helper     (bsc#1095643).

  - null_blk: use sector_div instead of do_div     (bsc#1082979).

  - nvme-rdma: Check remotely invalidated rkey matches our     expected rkey (bsc#1092001).

  - nvme-rdma: default MR page size to 4k (bsc#1092001).

  - nvme-rdma: do not complete requests before a send work     request has completed (bsc#1092001).

  - nvme-rdma: do not suppress send completions     (bsc#1092001).

  - nvme-rdma: Fix command completion race at error recovery     (bsc#1090435).

  - nvme-rdma: make nvme_rdma_[create|destroy]_queue_ib     symmetrical (bsc#1092001).

  - nvme-rdma: use inet_pton_with_scope helper     (bsc#1095643).

  - nvme-rdma: Use mr pool (bsc#1092001).

  - nvme-rdma: wait for local invalidation before completing     a request (bsc#1092001).

  - ocfs2: subsystem.su_mutex is required while accessing     the item->ci_parent (bnc#1012382).

  - pci: ibmphp: Fix use-before-set in get_max_bus_speed()     (bsc#1100132).

  - perf tools: Move syscall number fallbacks from     perf-sys.h to tools/arch/x86/include/asm/ (bnc#1012382).

  - pm / hibernate: Fix oops at snapshot_write()     (bnc#1012382).

  - powerpc/64: Initialise thread_info for emergency stacks     (bsc#1094244, bsc#1100930, bsc#1102683).

  - powerpc/fadump: handle crash memory ranges array index     overflow (bsc#1103269).

  - powerpc/fadump: merge adjacent memory ranges to reduce     PT_LOAD segements (bsc#1103269).

  - qed: Limit msix vectors in kdump kernel to the minimum     required count (bnc#1012382).

  - r8152: napi hangup fix after disconnect (bnc#1012382).

  - rdma/ocrdma: Fix an error code in ocrdma_alloc_pd()     (bsc#1082979).

  - rdma/ocrdma: Fix error codes in ocrdma_create_srq()     (bsc#1082979).

  - rdma/ucm: Mark UCM interface as BROKEN (bnc#1012382).

  - rds: avoid unenecessary cong_update in loop transport     (bnc#1012382).

  - Revert     'block-cancel-workqueue-entries-on-blk_mq_freeze_queue'     (bsc#1103717)

  - Revert 'sit: reload iphdr in ipip6_rcv' (bnc#1012382).

  - Revert 'x86/cpufeature: Move some of the scattered     feature bits to x86_capability' (kabi).

  - Revert 'x86/cpu: Probe CPUID leaf 6 even when     cpuid_level == 6' (kabi).

  - rtlwifi: rtl8821ae: fix firmware is not ready to run     (bnc#1012382).

  - s390/qeth: fix error handling in adapter command     callbacks (bnc#1103745, LTC#169699).

  - sched/smt: Update sched_smt_present at runtime     (bsc#1089343).

  - scsi: qlogicpti: Fix an error handling path in     'qpti_sbus_probe()' (bsc#1082979).

  - scsi: sg: fix minor memory leak in error path     (bsc#1082979).

  - scsi: target: fix crash with iscsi target and dvd     (bsc#1082979).

  - smsc75xx: Add workaround for gigabit link up hardware     errata (bsc#1100132).

  - smsc95xx: Configure pause time to 0xffff when tx flow     control enabled (bsc#1085536).

  - supported.conf: Do not build KMP for openSUSE kernels     The merge of kselftest-kmp was overseen, and bad for     openSUSE-42.3

  - tcp: fix Fast Open key endianness (bnc#1012382).

  - tcp: prevent bogus FRTO undos with non-SACK flows     (bnc#1012382).

  - tools build: fix # escaping in .cmd files for future     Make (bnc#1012382).

  - uprobes/x86: Remove incorrect WARN_ON() in     uprobe_init_insn() (bnc#1012382).

  - usb: core: handle hub C_PORT_OVER_CURRENT condition     (bsc#1100132).

  - usb: quirks: add delay quirks for Corsair Strafe     (bnc#1012382).

  - usb: serial: ch341: fix type promotion bug in     ch341_control_in() (bnc#1012382).

  - usb: serial: cp210x: add another USB ID for Qivicon     ZigBee stick (bnc#1012382).

  - usb: serial: keyspan_pda: fix modem-status error     handling (bnc#1012382).

  - usb: serial: mos7840: fix status-register error handling     (bnc#1012382).

  - usb: yurex: fix out-of-bounds uaccess in read handler     (bnc#1012382).

  - vfio: platform: Fix reset module leak in error path     (bsc#1102211).

  - vfs: add the sb_start_intwrite_trylock() helper     (bsc#1101841).

  - vhost_net: validate sock before trying to put its fd     (bnc#1012382).

  - vmw_balloon: fix inflation with batching (bnc#1012382).

  - x86/alternatives: Add an auxilary section (bnc#1012382).

  - x86/alternatives: Discard dynamic check after init     (bnc#1012382).

  - x86/apic: Ignore secondary threads if nosmt=force     (bsc#1089343).

  - x86/asm: Add _ASM_ARG* constants for argument registers     to <asm/asm.h> (bnc#1012382).

  - x86/boot: Simplify kernel load address alignment check     (bnc#1012382).

  - x86/CPU/AMD: Do not check CPUID max ext level before     parsing SMP info (bsc#1089343).

  - x86/cpu/AMD: Evaluate smp_num_siblings early     (bsc#1089343).

  - x86/CPU/AMD: Move TOPOEXT reenablement before reading     smp_num_siblings (bsc#1089343). Update config files.

  - x86/cpu/AMD: Remove the pointless detect_ht() call     (bsc#1089343).

  - x86/cpu/common: Provide detect_ht_early() (bsc#1089343).

  - x86/cpufeature: Add helper macro for mask check macros     (bnc#1012382).

  - x86/cpufeature: Carve out X86_FEATURE_* (bnc#1012382).

  - x86/cpufeature: Get rid of the non-asm goto variant     (bnc#1012382).

  - x86/cpufeature: Make sure DISABLED/REQUIRED macros are     updated (bnc#1012382).

  - x86/cpufeature: Move some of the scattered feature bits     to x86_capability (bnc#1012382).

  - x86/cpufeature: Replace the old static_cpu_has() with     safe variant (bnc#1012382).

  - x86/cpufeature: Speed up cpu_feature_enabled()     (bnc#1012382).

  - x86/cpufeature: Update cpufeaure macros (bnc#1012382).

  - x86/cpu/intel: Evaluate smp_num_siblings early     (bsc#1089343).

  - x86/cpu: Probe CPUID leaf 6 even when cpuid_level == 6     (bnc#1012382).

  - x86/cpu: Provide a config option to disable     static_cpu_has (bnc#1012382).

  - x86/cpu: Remove the pointless CPU printout     (bsc#1089343).

  - x86/cpu/topology: Provide     detect_extended_topology_early() (bsc#1089343).

  - x86/fpu: Add an XSTATE_OP() macro (bnc#1012382).

  - x86/fpu: Get rid of xstate_fault() (bnc#1012382).

  - x86/headers: Do not include asm/processor.h in     asm/atomic.h (bnc#1012382).

  - x86/mm/pkeys: Fix mismerge of protection keys CPUID bits     (bnc#1012382).

  - x86/mm: Simplify p[g4um]d_page() macros (1087081).

  - x86/smpboot: Do not use smp_num_siblings in
    __max_logical_packages calculation (bsc#1089343).

  - x86/smp: Provide topology_is_primary_thread()     (bsc#1089343).

  - x86/topology: Add topology_max_smt_threads()     (bsc#1089343).

  - x86/topology: Provide topology_smt_supported()     (bsc#1089343).

  - x86/vdso: Use static_cpu_has() (bnc#1012382).

  - xen/grant-table: log the lack of grants (bnc#1085042).

  - xen-netfront: Fix mismatched rtnl_unlock (bnc#1101658).

  - xen-netfront: Update features after registering netdev     (bnc#1101658).

  - xhci: xhci-mem: off by one in xhci_stream_id_to_ring()     (bnc#1012382).

Linux 4.9 has been packaged for Debian 8 as linux-4.9. This provides a supported upgrade path for systems that currently use kernel packages from the 'jessie-backports' suite.

There is no need to upgrade systems using Linux 3.16, as that kernel version will also continue to be supported in the LTS period.

This backport does not include the following binary packages :

hyperv-daemons libcpupower1 libcpupower-dev libusbip-dev linux-compiler-gcc-4.9-x86 linux-cpupower linux-libc-dev usbip

Older versions of most of those are built from other source packages in Debian 8.

Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

CVE-2017-5753

Further instances of code that was vulnerable to Spectre variant 1 (bounds-check bypass) have been mitigated.

CVE-2017-18255

It was discovered that the performance events subsystem did not properly validate the value of the kernel.perf_cpu_time_max_percent sysctl. Setting a large value could have an unspecified security impact. However, only a privileged user can set this sysctl.

CVE-2018-1118

The syzbot software found that the vhost driver did not initialise message buffers which would later be read by user processes. A user with access to the /dev/vhost-net device could use this to read sensitive information from the kernel or other users' processes.

CVE-2018-1120

Qualys reported that a user able to mount FUSE filesystems can create a process such that when another process attempting to read its command line will be blocked for an arbitrarily long time. This could be used for denial of service, or to aid in exploiting a race condition in the other program.

CVE-2018-1130

The syzbot software found that the DCCP implementation of sendmsg() does not check the socket state, potentially leading to a NULL pointer dereference. A local user could use this to cause a denial of service (crash). 

CVE-2018-3639

Multiple researchers have discovered that Speculative Store Bypass (SSB), a feature implemented in many processors, could be used to read sensitive information from another context. In particular, code in a software sandbox may be able to read sensitive information from outside the sandbox. This issue is also known as Spectre variant 4.

This update allows the issue to be mitigated on some x86 processors by disabling SSB. This requires an update to the processor's microcode, which is non-free. It may be included in an update to the system BIOS or UEFI firmware, or in a future update to the intel-microcode or amd64-microcode packages.

Disabling SSB can reduce performance significantly, so by default it is only done in tasks that use the seccomp feature. Applications that require this mitigation should request it explicitly through the prctl() system call. Users can control where the mitigation is enabled with the spec_store_bypass_disable kernel parameter.

CVE-2018-5814

Jakub Jirasek reported race conditions in the USB/IP host driver. A malicious client could use this to cause a denial of service (crash or memory corruption), and possibly to execute code, on a USB/IP server.

CVE-2018-10021

A physically present attacker who unplugs a SAS cable can cause a denial of service (memory leak and WARN).

CVE-2018-10087, CVE-2018-10124

zhongjiang found that the wait4() and kill() system call implementations did not check for the invalid pid value of INT_MIN. If a user passed this value, the behaviour of the code was formally undefined and might have had a security impact.

CVE-2018-10853

Andy Lutomirski and Mika Penttil&auml; reported that KVM for x86 processors did not perform a necessary privilege check when emulating certain instructions. This could be used by an unprivileged user in a guest VM to escalate their privileges within the guest.

CVE-2018-10876, CVE-2018-10877, CVE-2018-10878, CVE-2018-10879, CVE-2018-10880, CVE-2018-10881, CVE-2018-10882, CVE-2018-10883

Wen Xu at SSLab, Gatech, reported that crafted ext4 filesystem images could trigger a crash or memory corruption. A local user able to mount arbitrary filesystems, or an attacker providing filesystems to be mounted, could use this for denial of service or possibly for privilege escalation.

CVE-2018-10940

Dan Carpenter reported that the optical disc driver (cdrom) does not correctly validate the parameter to the CDROM_MEDIA_CHANGED ioctl. A user with access to a cdrom device could use this to cause a denial of service (crash).

CVE-2018-11506

Piotr Gabriel Kosinski and Daniel Shapira reported that the SCSI optical disc driver (sr) did not allocate a sufficiently large buffer for sense data. A user with access to a SCSI optical disc device that can produce more than 64 bytes of sense data could use this to cause a denial of service (crash or memory corruption), and possibly for privilege escalation.

CVE-2018-12233

Shankara Pailoor reported that a crafted JFS filesystem image could trigger a denial of service (memory corruption). This could possibly also be used for privilege escalation.

CVE-2018-1000204

The syzbot software found that the SCSI generic driver (sg) would in some circumstances allow reading data from uninitialised buffers, which could include sensitive information from the kernel or other tasks. However, only privileged users with the CAP_SYS_ADMIN or CAP_SYS_RAWIO capability were allowed to do this, so this has little or no security impact.

For Debian 8 'Jessie', these problems have been fixed in version 4.9.110-1~deb8u1. This update additionally fixes Debian bugs #860900, #872907, #892057, #896775, #897590, and #898137; and includes many more bug fixes from stable updates 4.9.89-4.9.110 inclusive.

We recommend that you upgrade your linux-4.9 packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
125514	EulerOS 2.0 SP3 : kernel (EulerOS-SA-2019-1587)	Nessus	Huawei Local Security Checks	high
124835	EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1514)	Nessus	Huawei Local Security Checks	high
124637	OracleVM 3.4 : Unbreakable / etc (OVMSA-2019-0014)	Nessus	OracleVM Local Security Checks	medium
124398	EulerOS 2.0 SP2 : kernel (EulerOS-SA-2019-1302)	Nessus	Huawei Local Security Checks	high
123962	Oracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2019-4601)	Nessus	Oracle Linux Local Security Checks	medium
123961	Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2019-4600)	Nessus	Oracle Linux Local Security Checks	high
123631	Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2019-4596)	Nessus	Oracle Linux Local Security Checks	medium
123269	openSUSE Security Update : the Linux Kernel (openSUSE-2019-618) (Foreshadow)	Nessus	SuSE Local Security Checks	high
122052	Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : Linux kernel (Azure) vulnerabilities (USN-3871-5)	Nessus	Ubuntu Local Security Checks	high
121594	Ubuntu 16.04 LTS : Linux kernel (HWE) vulnerabilities (USN-3871-4)	Nessus	Ubuntu Local Security Checks	high
121593	Ubuntu 18.04 LTS : Linux kernel (AWS, GCP, KVM, OEM, Raspberry Pi 2) vulnerabilities (USN-3871-3)	Nessus	Ubuntu Local Security Checks	high
121469	Ubuntu 18.04 LTS : Linux kernel vulnerabilities (USN-3871-1)	Nessus	Ubuntu Local Security Checks	high
120082	SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2018:2380-1) (Foreshadow)	Nessus	SuSE Local Security Checks	high
118513	RHEL 7 : kernel-alt (RHSA-2018:2948)	Nessus	Red Hat Local Security Checks	high
118034	SUSE SLES12 Security Update : kernel (SUSE-SU-2018:3084-1)	Nessus	SuSE Local Security Checks	high
118033	SUSE SLES12 Security Update : kernel (SUSE-SU-2018:3083-1)	Nessus	SuSE Local Security Checks	high
117824	SUSE SLES12 Security Update : kernel (SUSE-SU-2018:2908-1)	Nessus	SuSE Local Security Checks	high
117800	SUSE SLES12 Security Update : kernel (SUSE-SU-2018:2858-1)	Nessus	SuSE Local Security Checks	high
117629	SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2018:2776-1)	Nessus	SuSE Local Security Checks	high
112112	Ubuntu 14.04 LTS : Linux kernel (Xenial HWE) vulnerabilities (USN-3753-2)	Nessus	Ubuntu Local Security Checks	high
112111	Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-3753-1)	Nessus	Ubuntu Local Security Checks	high
111997	openSUSE Security Update : the Linux Kernel (openSUSE-2018-885) (Foreshadow)	Nessus	SuSE Local Security Checks	high
111812	openSUSE Security Update : the Linux Kernel (openSUSE-2018-886) (Foreshadow)	Nessus	SuSE Local Security Checks	high
111165	Debian DLA-1423-1 : linux-4.9 new package (Spectre)	Nessus	Debian Local Security Checks	high

Detections

Analytics

CVE-2018-10882

medium

Tenable Plugins

high

high

medium

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medium

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medium

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