The __driver_rfc4106_decrypt function in arch/x86/crypto/aesni-intel_glue.c in the Linux kernel before 3.19.3 does not properly determine the memory locations used for encrypted data, which allows context-dependent attackers to cause a denial of service (buffer overflow and system crash) or possibly execute arbitrary code by triggering a crypto API call, as demonstrated by use of a libkcapi test program with an AF_ALG(aead) socket.

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

  - It was found that the Linux kernel's implementation of     vectored pipe read and write functionality did not take     into account the I/O vectors that were already     processed when retrying after a failed atomic access     operation, potentially resulting in memory corruption     due to an I/O vector array overrun. A local,     unprivileged user could use this flaw to crash the     system or, potentially, escalate their privileges on     the system.(CVE-2015-1805)

  - net/llc/sysctl_net_llc.c in the Linux kernel before     3.19 uses an incorrect data type in a sysctl table,     which allows local users to obtain potentially     sensitive information from kernel memory or possibly     have unspecified other impact by accessing a sysctl     entry.(CVE-2015-2041)

  - net/rds/sysctl.c in the Linux kernel before 3.19 uses     an incorrect data type in a sysctl table, which allows     local users to obtain potentially sensitive information     from kernel memory or possibly have unspecified other     impact by accessing a sysctl entry.(CVE-2015-2042)

  - Xen 3.3.x through 4.5.x and the Linux kernel through     3.19.1 do not properly restrict access to PCI command     registers, which might allow local guest OS users to     cause a denial of service (non-maskable interrupt and     host crash) by disabling the (1) memory or (2) I/O     decoding for a PCI Express device and then accessing     the device, which triggers an Unsupported Request (UR)     response.(CVE-2015-2150)

  - A stack-based buffer overflow flaw was found in the     Linux kernel's early load microcode functionality. On a     system with UEFI Secure Boot enabled, a local,     privileged user could use this flaw to increase their     privileges to the kernel (ring0) level, bypassing     intended restrictions in place.(CVE-2015-2666)

  - The xsave/xrstor implementation in     arch/x86/include/asm/xsave.h in the Linux kernel before     3.19.2 creates certain .altinstr_replacement pointers     and consequently does not provide any protection     against instruction faulting, which allows local users     to cause a denial of service (panic) by triggering a     fault, as demonstrated by an unaligned memory operand     or a non-canonical address memory     operand.(CVE-2015-2672)

  - A flaw was found in the way the Linux kernel's 32-bit     emulation implementation handled forking or closing of     a task with an 'int80' entry. A local user could     potentially use this flaw to escalate their privileges     on the system.(CVE-2015-2830)

  - It was found that the Linux kernel's TCP/IP protocol     suite implementation for IPv6 allowed the Hop Limit     value to be set to a smaller value than the default     one. An attacker on a local network could use this flaw     to prevent systems on that network from sending or     receiving network packets.(CVE-2015-2922)

  - A flaw was found in the way the Linux kernel's file     system implementation handled rename operations in     which the source was inside and the destination was     outside of a bind mount. A privileged user inside a     container could use this flaw to escape the bind mount     and, potentially, escalate their privileges on the     system.(CVE-2015-2925)

  - A race condition flaw was found in the way the Linux     kernel's SCTP implementation handled Address     Configuration lists when performing Address     Configuration Change (ASCONF). A local attacker could     use this flaw to crash the system via a race condition     triggered by setting certain ASCONF options on a     socket.(CVE-2015-3212)

  - mm/memory.c in the Linux kernel before 4.1.4 mishandles     anonymous pages, which allows local users to gain     privileges or cause a denial of service (page tainting)     via a crafted application that triggers writing to page     zero.(CVE-2015-3288)

  - A flaw was found in the way the Linux kernel's nested     NMI handler and espfix64 functionalities interacted     during NMI processing. A local, unprivileged user could     use this flaw to crash the system or, potentially,     escalate their privileges on the system.(CVE-2015-3290)

  - It was found that if a Non-Maskable Interrupt (NMI)     occurred immediately after a SYSCALL call or before a     SYSRET call with the user RSP pointing to the NMI IST     stack, the kernel could skip that NMI.(CVE-2015-3291)

  - A buffer overflow flaw was found in the way the Linux     kernel's Intel AES-NI instructions optimized version of     the RFC4106 GCM mode decryption functionality handled     fragmented packets. A remote attacker could use this     flaw to crash, or potentially escalate their privileges     on, a system over a connection with an active AES-GCM     mode IPSec security association.(CVE-2015-3331)

  - A race condition flaw was found between the chown and     execve system calls. When changing the owner of a     setuid user binary to root, the race condition could     momentarily make the binary setuid root. A local,     unprivileged user could potentially use this flaw to     escalate their privileges on the system.(CVE-2015-3339)

  - It was found that the Linux kernel's ping socket     implementation did not properly handle socket unhashing     during spurious disconnects, which could lead to a     use-after-free flaw. On x86-64 architecture systems, a     local user able to create ping sockets could use this     flaw to crash the system. On non-x86-64 architecture     systems, a local user able to create ping sockets could     use this flaw to escalate their privileges on the     system.(CVE-2015-3636)

  - An inode data validation error was found in Linux     kernels built with UDF file system (CONFIG_UDF_FS)     support. An attacker able to mount a     corrupted/malicious UDF file system image could cause     the kernel to crash.(CVE-2015-4167)

  - A flaw was discovered in the way the Linux kernel's TTY     subsystem handled the tty shutdown phase. A local,     unprivileged user could use this flaw to cause denial     of service on the system by holding a reference to the     ldisc lock during tty shutdown, causing a     deadlock.(CVE-2015-4170)

  - A flaw was discovered in the kernel's collect_mounts     function. If the kernel's audit subsystem called     collect_mounts to audit an unmounted path, it could     panic the system. With this flaw, an unprivileged user     could call umount(MNT_DETACH) to launch a     denial-of-service attack.(CVE-2015-4177)

  - A DoS flaw was found for a Linux kernel built for the     x86 architecture which had the KVM virtualization     support(CONFIG_KVM) enabled. The kernel would be     vulnerable to a NULL pointer dereference flaw in Linux     kernel's kvm_apic_has_events() function while doing an     ioctl. An unprivileged user able to access the     '/dev/kvm' device could use this flaw to crash the     system kernel.(CVE-2015-4692)

  - A flaw was found in the kernel's implementation of the     Berkeley Packet Filter (BPF). A local attacker could     craft BPF code to crash the system by creating a     situation in which the JIT compiler would fail to     correctly optimize the JIT image on the last pass. This     would lead to the CPU executing instructions that were     not part of the JIT code.(CVE-2015-4700)

  - A buffer overflow flaw was found in the way the Linux     kernel's virtio-net subsystem handled certain fraglists     when the GRO (Generic Receive Offload) functionality     was enabled in a bridged network configuration. An     attacker on the local network could potentially use     this flaw to crash the system, or, although unlikely,     elevate their privileges on the system.(CVE-2015-5156)

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 for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - In the Linux kernel, Hisilicon Network Subsystem (HNS)     does not consider the ETH_SS_PRIV_FLAGS case when     retrieving sset_count data. This allows local users to     cause a denial of service (buffer overflow and memory     corruption) or possibly have unspecified other     impacts.(CVE-2017-18222i1/4%0

  - A flaw was found in the way the Linux kernel's     networking implementation handled UDP packets with     incorrect checksum values. A remote attacker could     potentially use this flaw to trigger an infinite loop     in the kernel, resulting in a denial of service on the     system, or cause a denial of service in applications     using the edge triggered epoll     functionality.(CVE-2015-5366i1/4%0

  - A use-after-free vulnerability was found in the     kernel's socket recvmmsg subsystem. This may allow     remote attackers to corrupt memory and may allow     execution of arbitrary code. This corruption takes     place during the error handling routines within
    __sys_recvmmsg() function.(CVE-2016-7117i1/4%0

  - arch/x86/kvm/vmx.c in the Linux kernel through 4.6.3     mishandles the APICv on/off state, which allows guest     OS users to obtain direct APIC MSR access on the host     OS, and consequently cause a denial of service (host OS     crash) or possibly execute arbitrary code on the host     OS, via x2APIC mode.(CVE-2016-4440i1/4%0

  - In the Linux kernel before 4.17, a local attacker able     to set attributes on an xfs filesystem could make this     filesystem non-operational until the next mount by     triggering an unchecked error condition during an xfs     attribute change, because xfs_attr_shortform_addname in     fs/xfs/libxfs/xfs_attr.c mishandles ATTR_REPLACE     operations with conversion of an attr from short to     long form.(CVE-2018-18690i1/4%0

  - 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.(CVE-2018-10878i1/4%0

  - Xen 3.3.x through 4.5.x and the Linux kernel through     3.19.1 do not properly restrict access to PCI command     registers, which might allow local guest OS users to     cause a denial of service (non-maskable interrupt and     host crash) by disabling the (1) memory or (2) I/O     decoding for a PCI Express device and then accessing     the device, which triggers an Unsupported Request (UR)     response.(CVE-2015-2150i1/4%0

  - The assoc_array_insert_into_terminal_node() function in     'lib/assoc_array.c' in the Linux kernel before 4.5.3     does not check whether a slot is a leaf, which allows     local users to obtain sensitive information from kernel     memory or cause a denial of service (invalid pointer     dereference and out-of-bounds read) via an application     that uses associative-array data     structures.(CVE-2016-7914i1/4%0

  - It was found that the x86 ISA (Instruction Set     Architecture) is prone to a denial of service attack     inside a virtualized environment in the form of an     infinite loop in the microcode due to the way     (sequential) delivering of benign exceptions such as     #AC (alignment check exception) is handled. A     privileged user inside a guest could use this flaw to     create denial of service conditions on the host     kernel.(CVE-2015-5307i1/4%0

  - An issue was discovered in fs/f2fs/super.c in the Linux     kernel, which does not properly validate secs_per_zone     in a corrupted f2fs image. This may lead to a     divide-by-zero error and a system     crash.(CVE-2018-13100i1/4%0

  - The mISDN_sock_recvmsg function in     drivers/isdn/mISDN/socket.c in the Linux kernel before     3.12.4 does not ensure that a certain length value is     consistent with the size of an associated data     structure, which allows local users to obtain sensitive     information from kernel memory via a (1) recvfrom, (2)     recvmmsg, or (3) recvmsg system call.(CVE-2013-7266i1/4%0

  - A NULL pointer dereference flaw was found in the     rds_iw_laddr_check() function in the Linux kernel's     implementation of Reliable Datagram Sockets (RDS). A     local, unprivileged user could use this flaw to crash     the system.(CVE-2014-2678i1/4%0

  - A flaw was found in the Linux kernel's handling of     packets with the URG flag. Applications using the     splice() and tcp_splice_read() functionality could     allow a remote attacker to force the kernel to enter a     condition in which it could loop     indefinitely.(CVE-2017-6214i1/4%0

  - The kernel_wait4 function in kernel/exit.c in the Linux     kernel before 4.13, when an unspecified architecture     and compiler is used, might allow local users to cause     a denial of service by triggering an attempted use of     the -INT_MIN value.(CVE-2018-10087i1/4%0

  - Heap-based buffer overflow in the private wireless     extensions IOCTL implementation in wlan_hdd_wext.c in     the WLAN (aka Wi-Fi) driver for the Linux kernel 3.x     and 4.x, as used in Qualcomm Innovation Center (QuIC)     Android contributions for MSM devices and other     products, allows attackers to gain privileges via a     crafted application that establishes a packet     filter.(CVE-2015-0569i1/4%0

  - A race condition flaw was found in the Linux kernel's     ext4 file system implementation that allowed a local,     unprivileged user to crash the system by simultaneously     writing to a file and toggling the O_DIRECT flag using     fcntl(F_SETFL) on that file.(CVE-2014-8086i1/4%0

  - The mm_init function in kernel/fork.c in the Linux     kernel before 4.12.10 does not clear the -i1/4zexe_file     member of a new process's mm_struct, allowing a local     attacker to achieve a use-after-free condition and to     induce a kernel memory corruption on the system,     leading to a crash or possibly have unspecified other     impact by running a specially crafted program. Due to     the nature of the flaw, privilege escalation cannot be     fully ruled out, although we feel it is     unlikely.(CVE-2017-17052i1/4%0

  - A buffer overflow flaw was found in the way the Linux     kernel's Intel AES-NI instructions optimized version of     the RFC4106 GCM mode decryption functionality handled     fragmented packets. A remote attacker could use this     flaw to crash, or potentially escalate their privileges     on, a system over a connection with an active AES-GCM     mode IPSec security association.(CVE-2015-3331i1/4%0

  - A flaw was found in the processing of incoming L2CAP     bluetooth commands. Uninitialized stack variables can     be sent to an attacker leaking data in kernel address     space.(CVE-2017-1000410i1/4%0

  - It was found that a remote attacker could use a race     condition flaw in the ath_tx_aggr_sleep() function to     crash the system by creating large network traffic on     the system's Atheros 9k wireless network     adapter.(CVE-2014-2672i1/4%0

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 : please see Oracle VM Security Advisory OVMSA-2016-0037 for details.

The SUSE Linux Enterprise Server 11 SP2 LTSS kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

  - CVE-2015-5707: An integer overflow in the SCSI generic     driver could be potentially used by local attackers to     crash the kernel or execute code.

  - CVE-2015-2830: arch/x86/kernel/entry_64.S in the Linux     kernel did not prevent the TS_COMPAT flag from reaching     a user-mode task, which might have allowed local users     to bypass the seccomp or audit protection mechanism via     a crafted application that uses the (1) fork or (2)     close system call, as demonstrated by an attack against     seccomp before 3.16 (bnc#926240).

  - CVE-2015-0777: drivers/xen/usbback/usbback.c in the     Linux kernel allowed guest OS users to obtain sensitive     information from uninitialized locations in host OS     kernel memory via unspecified vectors (bnc#917830).

  - CVE-2015-2150: Xen and the Linux kernel did not properly     restrict access to PCI command registers, which might     have allowed local guest users to cause a denial of     service (non-maskable interrupt and host crash) by     disabling the (1) memory or (2) I/O decoding for a PCI     Express device and then accessing the device, which     triggers an Unsupported Request (UR) response     (bnc#919463).

  - CVE-2015-5364: A remote denial of service (hang) via UDP     flood with incorrect package checksums was fixed.
    (bsc#936831).

  - CVE-2015-5366: A remote denial of service (unexpected     error returns) via UDP flood with incorrect package     checksums was fixed. (bsc#936831).

  - CVE-2015-1420: CVE-2015-1420: Race condition in the     handle_to_path function in fs/fhandle.c in the Linux     kernel allowed local users to bypass intended size     restrictions and trigger read operations on additional     memory locations by changing the handle_bytes value of a     file handle during the execution of this function     (bnc#915517).

  - CVE-2015-4700: A local user could have created a bad     instruction in the JIT processed BPF code, leading to a     kernel crash (bnc#935705).

  - CVE-2015-1805: The (1) pipe_read and (2) pipe_write     implementations in fs/pipe.c in the Linux kernel did not     properly consider the side effects of failed
    __copy_to_user_inatomic and __copy_from_user_inatomic     calls, which allowed local users to cause a denial of     service (system crash) or possibly gain privileges via a     crafted application, aka an 'I/O vector array overrun'     (bnc#933429).

  - CVE-2015-3331: The __driver_rfc4106_decrypt function in     arch/x86/crypto/aesni-intel_glue.c in the Linux kernel     did not properly determine the memory locations used for     encrypted data, which allowed context-dependent     attackers to cause a denial of service (buffer overflow     and system crash) or possibly execute arbitrary code by     triggering a crypto API call, as demonstrated by use of     a libkcapi test program with an AF_ALG(aead) socket     (bnc#927257).

  - CVE-2015-2922: The ndisc_router_discovery function in     net/ipv6/ndisc.c in the Neighbor Discovery (ND) protocol     implementation in the IPv6 stack in the Linux kernel     allowed remote attackers to reconfigure a hop-limit     setting via a small hop_limit value in a Router     Advertisement (RA) message (bnc#922583).

  - CVE-2015-2041: net/llc/sysctl_net_llc.c in the Linux     kernel used an incorrect data type in a sysctl table,     which allowed local users to obtain potentially     sensitive information from kernel memory or possibly     have unspecified other impact by accessing a sysctl     entry (bnc#919007).

  - CVE-2015-3636: The ping_unhash function in     net/ipv4/ping.c in the Linux kernel did not initialize a     certain list data structure during an unhash operation,     which allowed local users to gain privileges or cause a     denial of service (use-after-free and system crash) by     leveraging the ability to make a SOCK_DGRAM socket     system call for the IPPROTO_ICMP or IPPROTO_ICMPV6     protocol, and then making a connect system call after a     disconnect (bnc#929525).

  - CVE-2014-8086: Race condition in the     ext4_file_write_iter function in fs/ext4/file.c in the     Linux kernel allowed local users to cause a denial of     service (file unavailability) via a combination of a     write action and an F_SETFL fcntl operation for the     O_DIRECT flag (bnc#900881).

  - CVE-2014-8159: The InfiniBand (IB) implementation in the     Linux kernel did not properly restrict use of User Verbs     for registration of memory regions, which allowed local     users to access arbitrary physical memory locations, and     consequently cause a denial of service (system crash) or     gain privileges, by leveraging permissions on a uverbs     device under /dev/infiniband/ (bnc#914742).

  - CVE-2014-9683: Off-by-one error in the     ecryptfs_decode_from_filename function in     fs/ecryptfs/crypto.c in the eCryptfs subsystem in the     Linux kernel allowed local users to cause a denial of     service (buffer overflow and system crash) or possibly     gain privileges via a crafted filename (bnc#918333).

  - CVE-2015-2042: net/rds/sysctl.c in the Linux kernel used     an incorrect data type in a sysctl table, which allowed     local users to obtain potentially sensitive information     from kernel memory or possibly have unspecified other     impact by accessing a sysctl entry (bnc#919018).

  - CVE-2015-1421: Use-after-free vulnerability in the     sctp_assoc_update function in net/sctp/associola.c in     the Linux kernel allowed remote attackers to cause a     denial of service (slab corruption and panic) or     possibly have unspecified other impact by triggering an     INIT collision that leads to improper handling of     shared-key data (bnc#915577).

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 11 Service Pack 3 kernel was updated to fix various bugs and security issues.

The following vulnerabilities have been fixed :

CVE-2015-3636: A missing sk_nulls_node_init() in ping_unhash() inside the ipv4 stack can cause crashes if a disconnect is followed by another connect() attempt. (bnc#929525)

CVE-2015-3339: Race condition in the prepare_binprm function in fs/exec.c in the Linux kernel before 3.19.6 allows local users to gain privileges by executing a setuid program at a time instant when a chown to root is in progress, and the ownership is changed but the setuid bit is not yet stripped. (bnc#928130)

CVE-2015-3331: The __driver_rfc4106_decrypt function in arch/x86/crypto/aesni-intel_glue.c in the Linux kernel before 3.19.3 does not properly determine the memory locations used for encrypted data, which allows context-dependent attackers to cause a denial of service (buffer overflow and system crash) or possibly execute arbitrary code by triggering a crypto API call, as demonstrated by use of a libkcapi test program with an AF_ALG(aead) socket. (bnc#927257)

CVE-2015-2922: The ndisc_router_discovery function in net/ipv6/ndisc.c in the Neighbor Discovery (ND) protocol implementation in the IPv6 stack in the Linux kernel before 3.19.6 allows remote attackers to reconfigure a hop-limit setting via a small hop_limit value in a Router Advertisement (RA) message. (bnc#922583)

CVE-2015-2830: arch/x86/kernel/entry_64.S in the Linux kernel before 3.19.2 does not prevent the TS_COMPAT flag from reaching a user-mode task, which might allow local users to bypass the seccomp or audit protection mechanism via a crafted application that uses the (1) fork or (2) close system call, as demonstrated by an attack against seccomp before 3.16. (bnc#926240)

CVE-2015-2150: XSA-120: Xen 3.3.x through 4.5.x and the Linux kernel through 3.19.1 do not properly restrict access to PCI command registers, which might allow local guest users to cause a denial of service (non-maskable interrupt and host crash) by disabling the (1) memory or (2) I/O decoding for a PCI Express device and then accessing the device, which triggers an Unsupported Request (UR) response.
(bnc#919463)

CVE-2015-2042: net/rds/sysctl.c in the Linux kernel before 3.19 uses an incorrect data type in a sysctl table, which allows local users to obtain potentially sensitive information from kernel memory or possibly have unspecified other impact by accessing a sysctl entry.
(bnc#919018)

CVE-2015-2041: net/llc/sysctl_net_llc.c in the Linux kernel before 3.19 uses an incorrect data type in a sysctl table, which allows local users to obtain potentially sensitive information from kernel memory or possibly have unspecified other impact by accessing a sysctl entry.
(bnc#919007)

CVE-2015-1421: Use-after-free vulnerability in the sctp_assoc_update function in net/sctp/associola.c in the Linux kernel before 3.18.8 allows remote attackers to cause a denial of service (slab corruption and panic) or possibly have unspecified other impact by triggering an INIT collision that leads to improper handling of shared-key data.
(bnc#915577)

CVE-2015-0777: drivers/xen/usbback/usbback.c in 1 -2.6.18-xen-3.4.0 (aka the Xen 3.4.x support patches for the Linux kernel 2.6.18), as used in the Linux kernel 2.6.x and 3.x in SUSE Linux distributions, allows guest OS users to obtain sensitive information from uninitialized locations in host OS kernel memory via unspecified vectors. (bnc#917830)

CVE-2014-9683: Off-by-one error in the ecryptfs_decode_from_filename function in fs/ecryptfs/crypto.c in the eCryptfs subsystem in the Linux kernel before 3.18.2 allows local users to cause a denial of service (buffer overflow and system crash) or possibly gain privileges via a crafted filename. (bnc#918333)

CVE-2014-9529: Race condition in the key_gc_unused_keys function in security/keys/gc.c in the Linux kernel through 3.18.2 allows local users to cause a denial of service (memory corruption or panic) or possibly have unspecified other impact via keyctl commands that trigger access to a key structure member during garbage collection of a key. (bnc#912202)

CVE-2014-9419: The __switch_to function in arch/x86/kernel/process_64.c in the Linux kernel through 3.18.1 does not ensure that Thread Local Storage (TLS) descriptors are loaded before proceeding with other steps, which makes it easier for local users to bypass the ASLR protection mechanism via a crafted application that reads a TLS base address. (bnc#911326)

CVE-2014-8159: The InfiniBand (IB) implementation in the Linux kernel does not properly restrict use of User Verbs for registration of memory regions, which allows local users to access arbitrary physical memory locations, and consequently cause a denial of service (system crash) or gain privileges, by leveraging permissions on a uverbs device under /dev/infiniband/. (bnc#914742)

CVE-2014-8086: Race condition in the ext4_file_write_iter function in fs/ext4/file.c in the Linux kernel through 3.17 allows local users to cause a denial of service (file unavailability) via a combination of a write action and an F_SETFL fcntl operation for the O_DIRECT flag.
(bnc#900881)

Also 

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.

Updated kernel packages that fix two security issues and three bugs are now available for Red Hat Enterprise Linux 6.5 Extended Update Support.

Red Hat Product Security has rated this update as having Important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

* It was found that the Linux kernel's implementation of vectored pipe read and write functionality did not take into account the I/O vectors that were already processed when retrying after a failed atomic access operation, potentially resulting in memory corruption due to an I/O vector array overrun. A local, unprivileged user could use this flaw to crash the system or, potentially, escalate their privileges on the system. (CVE-2015-1805, Important)

* A buffer overflow flaw was found in the way the Linux kernel's Intel AES-NI instructions optimized version of the RFC4106 GCM mode decryption functionality handled fragmented packets. A remote attacker could use this flaw to crash, or potentially escalate their privileges on, a system over a connection with an active AES-GCM mode IPSec security association. (CVE-2015-3331, Important)

The security impact of the CVE-2015-1805 issue was discovered by Red Hat.

This update also fixes the following bugs :

* Parallel extending direct I/O writes to a file could previously race to update the size of the file. If executed in an incorrect order, the file size could move backwards and push a previously completed write beyond the end of the file, which resulted in losing the write. With this update, file size updates always execute in appropriate order, thus fixing this bug. (BZ#1218498)

* When the load rose and run queues were busy due to the effects of the enqueue_entity() function, tasks with large sched_entity.vruntime values could previously be prevented from using the CPU time. A patch eliminating the entity_key() function in the sched_fair.c latency value has been backported from upstream, and all tasks are now provided with fair CPU runtime. (BZ# 1219121)

* Previously, running the clock_gettime() function quickly in a loop could result in a jump back in time. Consequently, programs could behave unexpectedly when they assumed that clock_getime() returned an equal or greater time in subsequent calls. With this update, if the time delta between calls is negative, the clock is no longer updated.
As a result, a subsequent call to clock_gettime() is guaranteed to return a time greater than or equal to a previous call. (BZ#1219500)

All kernel users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.

The SUSE Linux Enterprise 12 kernel was updated to version 3.12.43 to receive various security and bugfixes.

Following security bugs were fixed :

  - CVE-2014-3647: arch/x86/kvm/emulate.c in the KVM     subsystem in the Linux kernel through 3.17.2 did not     properly perform RIP changes, which allowed guest OS     users to cause a denial of service (guest OS crash) via     a crafted application (bsc#899192).

  - CVE-2014-8086: Race condition in the     ext4_file_write_iter function in fs/ext4/file.c in the     Linux kernel through 3.17 allowed local users to cause a     denial of service (file unavailability) via a     combination of a write action and an F_SETFL fcntl     operation for the O_DIRECT flag (bsc#900881).

  - CVE-2014-8159: The InfiniBand (IB) implementation did     not properly restrict use of User Verbs for registration     of memory regions, which allowed local users to access     arbitrary physical memory locations, and consequently     cause a denial of service (system crash) or gain     privileges, by leveraging permissions on a uverbs device     under /dev/infiniband/ (bsc#914742).

  - CVE-2015-1465: The IPv4 implementation in the Linux     kernel before 3.18.8 did not properly consider the     length of the Read-Copy Update (RCU) grace period for     redirecting lookups in the absence of caching, which     allowed remote attackers to cause a denial of service     (memory consumption or system crash) via a flood of     packets (bsc#916225).

  - CVE-2015-2041: net/llc/sysctl_net_llc.c in the Linux     kernel before 3.19 used an incorrect data type in a     sysctl table, which allowed local users to obtain     potentially sensitive information from kernel memory or     possibly have unspecified other impact by accessing a     sysctl entry (bsc#919007).

  - CVE-2015-2042: net/rds/sysctl.c in the Linux kernel     before 3.19 used an incorrect data type in a sysctl     table, which allowed local users to obtain potentially     sensitive information from kernel memory or possibly     have unspecified other impact by accessing a sysctl     entry (bsc#919018).

  - CVE-2015-2666: Fixed a flaw that allowed crafted     microcode to overflow the kernel stack (bsc#922944).

  - CVE-2015-2830: Fixed int80 fork from 64-bit tasks     mishandling (bsc#926240).

  - CVE-2015-2922: Fixed possible denial of service (DoS)     attack against IPv6 network stacks due to improper     handling of Router Advertisements (bsc#922583).

  - CVE-2015-3331: Fixed buffer overruns in RFC4106     implementation using AESNI (bsc#927257).

  - CVE-2015-3332: Fixed TCP Fast Open local DoS     (bsc#928135).

  - CVE-2015-3339: Fixed race condition flaw between the     chown() and execve() system calls which could have lead     to local privilege escalation (bsc#928130).

  - CVE-2015-3636: Fixed use-after-free in ping sockets     which could have lead to local privilege escalation     (bsc#929525).

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.

Jan Beulich discovered the Xen virtual machine subsystem of the Linux kernel did not properly restrict access to PCI command registers. A local guest user could exploit this flaw to cause a denial of service (host crash). (CVE-2015-2150)

A privilege escalation was discovered in the fork syscall via the int80 entry on 64 bit kernels with 32 bit emulation support. An unprivileged local attacker could exploit this flaw to increase their privileges on the system. (CVE-2015-2830)

A memory corruption issue was discovered in AES decryption when using the Intel AES-NI accelerated code path. A remote attacker could exploit this flaw to cause a denial of service (system crash) or potentially escalate privileges on Intel base machines with AEC-GCM mode IPSec security association. (CVE-2015-3331)

Wen Xu discovered a use-after-free flaw in the Linux kernel's ipv4 ping support. A local user could exploit this flaw to cause a denial of service (system crash) or gain administrative privileges on the system. (CVE-2015-3636)

Carl H Lunde discovered missing sanity checks in the the Linux kernel's UDF file system(CONFIG_UDF_FS). A local attack could exploit this flaw to cause a denial of service (system crash) by using a corrupted filesystem image. (CVE-2015-4167).

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

Updated kernel packages that fix multiple security issues, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having Important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

* It was found that the Linux kernel's implementation of vectored pipe read and write functionality did not take into account the I/O vectors that were already processed when retrying after a failed atomic access operation, potentially resulting in memory corruption due to an I/O vector array overrun. A local, unprivileged user could use this flaw to crash the system or, potentially, escalate their privileges on the system. (CVE-2015-1805, Important)

* A buffer overflow flaw was found in the way the Linux kernel's Intel AES-NI instructions optimized version of the RFC4106 GCM mode decryption functionality handled fragmented packets. A remote attacker could use this flaw to crash, or potentially escalate their privileges on, a system over a connection with an active AES-GCM mode IPSec security association. (CVE-2015-3331, Important)

* An information leak flaw was found in the way the Linux kernel changed certain segment registers and thread-local storage (TLS) during a context switch. A local, unprivileged user could use this flaw to leak the user space TLS base address of an arbitrary process.
(CVE-2014-9419, Low)

* It was found that the Linux kernel's ISO file system implementation did not correctly limit the traversal of Rock Ridge extension Continuation Entries (CE). An attacker with physical access to the system could use this flaw to trigger an infinite loop in the kernel, resulting in a denial of service. (CVE-2014-9420, Low)

* An information leak flaw was found in the way the Linux kernel's Virtual Dynamic Shared Object (vDSO) implementation performed address randomization. A local, unprivileged user could use this flaw to leak kernel memory addresses to user-space. (CVE-2014-9585, Low)

Red Hat would like to thank Carl Henrik Lunde for reporting CVE-2014-9420. The security impact of the CVE-2015-1805 issue was discovered by Red Hat.

This update also fixes several bugs and adds various enhancements.
Documentation for these changes is available from the Technical Notes document linked to in the References section.

All kernel users are advised to upgrade to these updated packages, which contain backported patches to correct these issues and add these enhancements. The system must be rebooted for this update to take effect.

* It was found that the Linux kernel's implementation of vectored pipe read and write functionality did not take into account the I/O vectors that were already processed when retrying after a failed atomic access operation, potentially resulting in memory corruption due to an I/O vector array overrun. A local, unprivileged user could use this flaw to crash the system or, potentially, escalate their privileges on the system. (CVE-2015-1805, Important)

* A buffer overflow flaw was found in the way the Linux kernel's Intel AES-NI instructions optimized version of the RFC4106 GCM mode decryption functionality handled fragmented packets. A remote attacker could use this flaw to crash, or potentially escalate their privileges on, a system over a connection with an active AES-GCM mode IPSec security association. (CVE-2015-3331, Important)

* An information leak flaw was found in the way the Linux kernel changed certain segment registers and thread-local storage (TLS) during a context switch. A local, unprivileged user could use this flaw to leak the user space TLS base address of an arbitrary process.
(CVE-2014-9419, Low)

* It was found that the Linux kernel's ISO file system implementation did not correctly limit the traversal of Rock Ridge extension Continuation Entries (CE). An attacker with physical access to the system could use this flaw to trigger an infinite loop in the kernel, resulting in a denial of service. (CVE-2014-9420, Low)

* An information leak flaw was found in the way the Linux kernel's Virtual Dynamic Shared Object (vDSO) implementation performed address randomization. A local, unprivileged user could use this flaw to leak kernel memory addresses to user-space. (CVE-2014-9585, Low)

The system must be rebooted for this update to take effect.

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2015:1081 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux     operating system.

    * It was found that the Linux kernel's implementation of vectored pipe read     and write functionality did not take into account the I/O vectors that were     already processed when retrying after a failed atomic access operation,     potentially resulting in memory corruption due to an I/O vector array     overrun. A local, unprivileged user could use this flaw to crash the system     or, potentially, escalate their privileges on the system. (CVE-2015-1805,     Important)

    * A buffer overflow flaw was found in the way the Linux kernel's Intel     AES-NI instructions optimized version of the RFC4106 GCM mode decryption     functionality handled fragmented packets. A remote attacker could use this     flaw to crash, or potentially escalate their privileges on, a system over a     connection with an active AES-GCM mode IPSec security association.
    (CVE-2015-3331, Important)

    * An information leak flaw was found in the way the Linux kernel changed     certain segment registers and thread-local storage (TLS) during a context     switch. A local, unprivileged user could use this flaw to leak the user     space TLS base address of an arbitrary process. (CVE-2014-9419, Low)

    * It was found that the Linux kernel's ISO file system implementation did     not correctly limit the traversal of Rock Ridge extension Continuation     Entries (CE). An attacker with physical access to the system could use this     flaw to trigger an infinite loop in the kernel, resulting in a denial of     service. (CVE-2014-9420, Low)

    * An information leak flaw was found in the way the Linux kernel's Virtual     Dynamic Shared Object (vDSO) implementation performed address     randomization. A local, unprivileged user could use this flaw to leak     kernel memory addresses to user-space. (CVE-2014-9585, Low)

    Red Hat would like to thank Carl Henrik Lunde for reporting     CVE-2014-9420. The security impact of the CVE-2015-1805 issue was     discovered by Red Hat.

    This update also fixes several bugs and adds various enhancements.
    Documentation for these changes is available from the Technical Notes     document linked to in the References section.

    All kernel users are advised to upgrade to these updated packages, which     contain backported patches to correct these issues and add these     enhancements. The system must be rebooted for this update to take effect.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise 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 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2015-1081 advisory.

    - [fs] pipe: fix pipe corruption and iovec overrun on partial copy (Seth Jennings) [1202860 1185166]     {CVE-2015-1805}
    - [x86] crypto: aesni - fix memory usage in GCM decryption (Kurt Stutsman) [1213329 1213330]     {CVE-2015-3331}
    - [fs] isofs: infinite loop in CE record entries (Jacob Tanenbaum) [1175243 1175245] {CVE-2014-9420}
    - [x86] vdso: ASLR bruteforce possible for vdso library (Jacob Tanenbaum) [1184896 1184897]     {CVE-2014-9585}
    - [x86] switch_to(): Load TLS descriptors before switching DS and ES (Denys Vlasenko) [1177353 1177354]     {CVE-2014-9419}
    - [infiniband] core: Prevent integer overflow in ib_umem_get address arithmetic (Doug Ledford) [1181173     1179327] {CVE-2014-8159}

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.

Alexandre Oliva reported a race condition flaw in the btrfs file system's handling of extended attributes (xattrs). A local attacker could exploit this flaw to bypass ACLs and potentially escalate privileges. (CVE-2014-9710)

A memory corruption issue was discovered in AES decryption when using the Intel AES-NI accelerated code path. A remote attacker could exploit this flaw to cause a denial of service (system crash) or potentially escalate privileges on Intel base machines with AEC-GCM mode IPSec security association. (CVE-2015-3331)

A flaw was discovered in the Linux kernel's IPv4 networking when using TCP fast open to initiate a connection. An unprivileged local user could exploit this flaw to cause a denial of service (system crash).
(CVE-2015-3332).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu 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-2615-1 advisory.

    Alexandre Oliva reported a race condition flaw in the btrfs file system's handling of extended attributes     (xattrs). A local attacker could exploit this flaw to bypass ACLs and potentially escalate privileges.
    (CVE-2014-9710)

    A memory corruption issue was discovered in AES decryption when using the Intel AES-NI accelerated code     path. A remote attacker could exploit this flaw to cause a denial of service (system crash) or potentially     escalate privileges on Intel base machines with AEC-GCM mode IPSec security association. (CVE-2015-3331)

    A flaw was discovered in the Linux kernel's IPv4 networking when using TCP fast open to initiate a     connection. An unprivileged local user could exploit this flaw to cause a denial of service (system     crash). (CVE-2015-3332)

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 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-2614-1 advisory.

    Vincent Tondellier discovered an integer overflow in the Linux kernel's netfilter connection tracking     accounting of loaded extensions. An attacker on the local area network (LAN) could potential exploit this     flaw to cause a denial of service (system crash of targeted system). (CVE-2014-9715)

    Jan Beulich discovered the Xen virtual machine subsystem of the Linux kernel did not properly restrict     access to PCI command registers. A local guest user could exploit this flaw to cause a denial of service     (host crash). (CVE-2015-2150)

    A privilege escalation was discovered in the fork syscall via the int80 entry on 64 bit kernels with 32     bit emulation support. An unprivileged local attacker could exploit this flaw to increase their privileges     on the system. (CVE-2015-2830)

    A memory corruption issue was discovered in AES decryption when using the Intel AES-NI accelerated code     path. A remote attacker could exploit this flaw to cause a denial of service (system crash) or potentially     escalate privileges on Intel base machines with AEC-GCM mode IPSec security association. (CVE-2015-3331)

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.

Vincent Tondellier discovered an integer overflow in the Linux kernel's netfilter connection tracking accounting of loaded extensions. An attacker on the local area network (LAN) could potential exploit this flaw to cause a denial of service (system crash of targeted system). (CVE-2014-9715)

Jan Beulich discovered the Xen virtual machine subsystem of the Linux kernel did not properly restrict access to PCI command registers. A local guest user could exploit this flaw to cause a denial of service (host crash). (CVE-2015-2150)

A privilege escalation was discovered in the fork syscal vi the int80 entry on 64 bit kernels with 32 bit emulation support. An unprivileged local attacker could exploit this flaw to increase their privileges on the system. (CVE-2015-2830)

A memory corruption issue was discovered in AES decryption when using the Intel AES-NI accelerated code path. A remote attacker could exploit this flaw to cause a denial of service (system crash) or potentially escalate privileges on Intel base machines with AEC-GCM mode IPSec security association. (CVE-2015-3331).

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

A buffer overflow flaw was found in the way the Linux kernel's Intel AES-NI instructions optimized version of the RFC4106 GCM mode decryption functionality handled fragmented packets. A remote attacker could use this flaw to crash, or potentially escalate their privileges on, a system over a connection with an active AEC-GCM mode IPSec security association. (CVE-2015-3331)

It was found that the Linux kernel's ping socket implementation did not properly handle socket unhashing during spurious disconnects, which could lead to a use-after-free flaw. On x86-64 architecture systems, a local user able to create ping sockets could use this flaw to crash the system. On non-x86-64 architecture systems, a local user able to create ping sockets could use this flaw to escalate their privileges on the system. (CVE-2015-3636)

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

  - crypto: aesni

  - fix memory usage in GCM decryption (Stephan Mueller)     [Orabug: 21077385] (CVE-2015-3331)

  - xen/pciback: Don't disable PCI_COMMAND on PCI device     reset. (Konrad Rzeszutek Wilk) [Orabug: 20807438]     (CVE-2015-2150)

  - xen-blkfront: fix accounting of reqs when migrating     (Roger Pau Monne) [Orabug: 20860817]

  - Doc/cpu-hotplug: Specify race-free way to register CPU     hotplug callbacks (Srivatsa S. Bhat) [Orabug: 20917697]

  - net/iucv/iucv.c: Fix CPU hotplug callback registration     (Srivatsa S. Bhat) [Orabug: 20917697]

  - net/core/flow.c: Fix CPU hotplug callback registration     (Srivatsa S. Bhat) [Orabug: 20917697]

  - mm, vmstat: Fix CPU hotplug callback registration     (Srivatsa S. Bhat) [Orabug: 20917697] 

  - profile: Fix CPU hotplug callback registration (Srivatsa     S. Bhat) 

  - trace, ring-buffer: Fix CPU hotplug callback     registration (Srivatsa S. Bhat) [Orabug: 20917697]

  - hwmon, via-cputemp: Fix CPU hotplug callback     registration (Srivatsa S. Bhat) 

  - hwmon, coretemp: Fix CPU hotplug callback registration     (Srivatsa S. Bhat) [Orabug: 20917697]

  - octeon, watchdog: Fix CPU hotplug callback registration     (Srivatsa S. Bhat) [Orabug: 20917697]

  - oprofile, nmi-timer: Fix CPU hotplug callback     registration (Srivatsa S. Bhat) [Orabug: 20917697]

  - intel-idle: Fix CPU hotplug callback registration     (Srivatsa S. Bhat) [Orabug: 20917697]

  - drivers/base/topology.c: Fix CPU hotplug callback     registration (Srivatsa S. Bhat) [Orabug: 20917697]

  - acpi-cpufreq: Fix CPU hotplug callback registration     (Srivatsa S. Bhat) [Orabug: 20917697]

  - scsi, fcoe: Fix CPU hotplug callback registration     (Srivatsa S. Bhat) [Orabug: 20917697] 

  - scsi, bnx2fc: Fix CPU hotplug callback registration     (Srivatsa S. Bhat) [Orabug: 20917697]

  - scsi, bnx2i: Fix CPU hotplug callback registration     (Srivatsa S. Bhat) [Orabug: 20917697]

  - arm64, debug-monitors: Fix CPU hotplug callback     registration (Srivatsa S. Bhat) [Orabug: 20917697]

  - arm64, hw_breakpoint.c: Fix CPU hotplug callback     registration (Srivatsa S. Bhat) [Orabug: 20917697]

  - x86, kvm: Fix CPU hotplug callback registration     (Srivatsa S. Bhat) [Orabug: 20917697]

  - x86, oprofile, nmi: Fix CPU hotplug callback     registration (Srivatsa S. Bhat) [Orabug: 20917697]

  - x86, pci, amd-bus: Fix CPU hotplug callback registration     (Srivatsa S. Bhat) [Orabug: 20917697]

  - x86, hpet: Fix CPU hotplug callback registration     (Srivatsa S. Bhat) [Orabug: 20917697]

  - x86, intel, cacheinfo: Fix CPU hotplug callback     registration (Srivatsa S. Bhat) [Orabug: 20917697]

  - x86, amd, ibs: Fix CPU hotplug callback registration     (Srivatsa S. Bhat) [Orabug: 20917697]

  - x86, therm_throt.c: Fix CPU hotplug callback     registration (Srivatsa S. Bhat) [Orabug: 20917697]

  - x86, mce: Fix CPU hotplug callback registration     (Srivatsa S. Bhat) [Orabug: 20917697]

  - x86, intel, uncore: Fix CPU hotplug callback     registration (Srivatsa S. Bhat) [Orabug: 20917697]

  - x86, vsyscall: Fix CPU hotplug callback registration     (Srivatsa S. Bhat) [Orabug: 20917697]

  - x86, cpuid: Fix CPU hotplug callback registration     (Srivatsa S. Bhat) [Orabug: 20917697]

  - x86, msr: Fix CPU hotplug callback registration     (Srivatsa S. Bhat) [Orabug: 20917697]

  - powerpc, sysfs: Fix CPU hotplug callback registration     (Srivatsa S. Bhat) 

  - sparc, sysfs: Fix CPU hotplug callback registration     (Srivatsa S. Bhat) [Orabug: 20917697]

  - s390, smp: Fix CPU hotplug callback registration     (Srivatsa S. Bhat) [Orabug: 20917697]

  - s390, cacheinfo: Fix CPU hotplug callback registration     (Srivatsa S. Bhat) 

  - arm, hw-breakpoint: Fix CPU hotplug callback     registration (Srivatsa S. Bhat) [Orabug: 20917697]

  - ia64, err-inject: Fix CPU hotplug callback registration     (Srivatsa S. Bhat) [Orabug: 20917697]

  - ia64, topology: Fix CPU hotplug callback registration     (Srivatsa S. Bhat) [Orabug: 20917697]

  - ia64, palinfo: Fix CPU hotplug callback registration     (Srivatsa S. Bhat) [Orabug: 20917697]

  - CPU hotplug, perf: Fix CPU hotplug callback registration     (Srivatsa S. Bhat) [Orabug: 20917697]

  - CPU hotplug: Provide lockless versions of callback     registration functions (Srivatsa S. Bhat) [Orabug:
    20917697]

  - isofs: Fix unchecked printing of ER records (Jan Kara)     [Orabug: 20930551] (CVE-2014-9584)

  - KEYS: close race between key lookup and freeing (Sasha     Levin) [Orabug: 20930548] (CVE-2014-9529)     (CVE-2014-9529)

  - mm: memcg: do not allow task about to OOM kill to bypass     the limit (Johannes Weiner) [Orabug: 20930539]     (CVE-2014-8171)

  - mm: memcg: do not declare OOM from __GFP_NOFAIL     allocations (Johannes Weiner) [Orabug: 20930539]     (CVE-2014-8171)

  - fs: buffer: move allocation failure loop into the     allocator (Johannes Weiner) [Orabug: 20930539]     (CVE-2014-8171)

  - mm: memcg: handle non-error OOM situations more     gracefully (Johannes Weiner) [Orabug: 20930539]     (CVE-2014-8171)

  - mm: memcg: do not trap chargers with full callstack on     OOM (Johannes Weiner) [Orabug: 20930539] (CVE-2014-8171)

  - mm: memcg: rework and document OOM waiting and wakeup     (Johannes Weiner) [Orabug: 20930539] (CVE-2014-8171)

  - mm: memcg: enable memcg OOM killer only for user faults     (Johannes Weiner) [Orabug: 20930539] (CVE-2014-8171)

  - x86: finish user fault error path with fatal signal     (Johannes Weiner) [Orabug: 20930539] (CVE-2014-8171)

  - arch: mm: pass userspace fault flag to generic fault     handler (Johannes Weiner) [Orabug: 20930539]     (CVE-2014-8171)

  - selinux: Permit bounded transitions under NO_NEW_PRIVS     or NOSUID. (Stephen Smalley) [Orabug: 20930501]     (CVE-2014-3215)

  - IB/core: Prevent integer overflow in ib_umem_get address     arithmetic (Shachar Raindel) [Orabug: 20799875]     (CVE-2014-8159) (CVE-2014-8159)

- A buffer overflow flaw was found in the way the Linux     kernel's Intel AES-NI instructions optimized version of     the RFC4106 GCM mode decryption functionality handled     fragmented packets. A remote attacker could use this     flaw to crash, or potentially escalate their privileges     on, a system over a connection with an active AEC-GCM     mode IPSec security association. (CVE-2015-3331,     Important)

This update also fixes the following bugs :

  - Previously, the kernel audit subsystem did not correctly     track file path names which could lead to empty, or     '(null)' path names in the PATH audit records. This     update fixes the bug by correctly tracking file path     names and displaying the names in the audit PATH     records.

  - Due to a change in the internal representation of field     types, AUDIT_LOGINUID set to -1 (4294967295) by the     audit API was asymmetrically converted to an     AUDIT_LOGINUID_SET field with a value of 0, unrecognized     by an older audit API. To fix this bug, the kernel takes     note about the way the rule has been formulated and     reports the rule in the originally given form. As a     result, older versions of audit provide a report as     expected, in the AUDIT_LOGINUID field type form, whereas     the newer versions can migrate to the new     AUDIT_LOGINUID_SET filed type.

  - The GFS2 file system 'Splice Read' operation, which is     used for the sendfile() function, was not properly     allocating a required multi-block reservation structure     in memory. Consequently, when the GFS2 block allocator     was called to assign blocks of data, it attempted to     dereference the structure, which resulted in a kernel     panic. With this update, 'Splice read' operation     properly allocates the necessary reservation structure     in memory prior to calling the block allocator, and     sendfile() thus works properly for GFS2.

  - Moving an Open vSwitch (OVS) internal vport to a     different net name space and subsequently deleting that     name space led to a kernel panic. This bug has been     fixed by removing the OVS internal vport at net name     space deletion.

  - Previously, the kernel audit subsystem was not correctly     handling file and directory moves, leading to audit     records that did not match the audit file watches. This     fix correctly handles moves such that the audit file     watches work correctly.

  - Due to a regression, the crypto adapter could not be set     online. A patch has been provided that fixes the device     registration process so that the device can be used also     before the registration process is completed, thus     fixing this bug.

  - Due to incorrect calculation for entropy during the     entropy addition, the amount of entropy in the     /dev/random file could be overestimated. The formula for     the entropy addition has been changed, thus fixing this     bug.

  - Previously, the ansi_cprng and drbg utilities did not     obey the call convention and returned the positive value     on success instead of the correct value of zero.
    Consequently, Internet Protocol Security (IPsec)     terminated unexpectedly when ansi_cprng or drbg were     used. With this update, ansi_cprng and drbg have been     changed to return zero on success, and IPsec now     functions correctly.

  - Due to a failure to clear the timestamp flag when     reusing a tx descriptor in the mlx4_en driver, programs     that did not request a hardware timestamp packet on     their sent data received it anyway, resulting in     unexpected behavior in certain applications. With this     update, when reusing the tx descriptor in the mlx4_en     driver in the aforementioned situation, the hardware     timestamp flag is cleared, and applications now behave     as expected.

The system must be rebooted for this update to take effect.

The remote Oracle Linux 5 / 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2015-3036 advisory.

  - Xen 3.3.x through 4.5.x and the Linux kernel through 3.19.1 do not properly restrict access to PCI command     registers, which might allow local guest OS users to cause a denial of service (non-maskable interrupt and     host crash) by disabling the (1) memory or (2) I/O decoding for a PCI Express device and then accessing     the device, which triggers an Unsupported Request (UR) response. (CVE-2015-2150)

  - The __driver_rfc4106_decrypt function in arch/x86/crypto/aesni-intel_glue.c in the Linux kernel before     3.19.3 does not properly determine the memory locations used for encrypted data, which allows context-     dependent attackers to cause a denial of service (buffer overflow and system crash) or possibly execute     arbitrary code by triggering a crypto API call, as demonstrated by use of a libkcapi test program with an     AF_ALG(aead) socket. (CVE-2015-3331)

Note that Nessus has not tested for this issue 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-2015-3035 advisory.

    - crypto: aesni - fix memory usage in GCM decryption (Stephan Mueller)  [Orabug: 21077385]     {CVE-2015-3331}
    - xen/pciback: Don't disable PCI_COMMAND on PCI device reset. (Konrad Rzeszutek Wilk)  [Orabug: 20807438]     {CVE-2015-2150}
    - isofs: Fix unchecked printing of ER records (Jan Kara)  [Orabug: 20930551]  {CVE-2014-9584}
    - KEYS: close race between key lookup and freeing (Sasha Levin)  [Orabug: 20930548]  {CVE-2014-9529}     {CVE-2014-9529}
    - mm: memcg: do not allow task about to OOM kill to bypass the limit (Johannes Weiner)  [Orabug: 20930539]     {CVE-2014-8171}
    - mm: memcg: do not declare OOM from __GFP_NOFAIL allocations (Johannes Weiner)  [Orabug: 20930539]     {CVE-2014-8171}
    - fs: buffer: move allocation failure loop into the allocator (Johannes Weiner)  [Orabug: 20930539]     {CVE-2014-8171}
    - mm: memcg: handle non-error OOM situations more gracefully (Johannes Weiner)  [Orabug: 20930539]     {CVE-2014-8171}
    - mm: memcg: do not trap chargers with full callstack on OOM (Johannes Weiner)  [Orabug: 20930539]     {CVE-2014-8171}
    - mm: memcg: rework and document OOM waiting and wakeup (Johannes Weiner)  [Orabug: 20930539]     {CVE-2014-8171}
    - mm: memcg: enable memcg OOM killer only for user faults (Johannes Weiner)  [Orabug: 20930539]     {CVE-2014-8171}
    - x86: finish user fault error path with fatal signal (Johannes Weiner)  [Orabug: 20930539]     {CVE-2014-8171}
    - arch: mm: pass userspace fault flag to generic fault handler (Johannes Weiner)  [Orabug: 20930539]     {CVE-2014-8171}
    - selinux: Permit bounded transitions under NO_NEW_PRIVS or NOSUID. (Stephen Smalley)  [Orabug: 20930501]     {CVE-2014-3215}

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 Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2015:0981 advisory.

  - Kernel: crypto: buffer overruns in RFC4106 implementation using AESNI (CVE-2015-3331)

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

Updated kernel packages that fix one security issue and several bugs are now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having Important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

* A buffer overflow flaw was found in the way the Linux kernel's Intel AES-NI instructions optimized version of the RFC4106 GCM mode decryption functionality handled fragmented packets. A remote attacker could use this flaw to crash, or potentially escalate their privileges on, a system over a connection with an active AEC-GCM mode IPSec security association. (CVE-2015-3331, Important)

This update also fixes the following bugs :

* Previously, the kernel audit subsystem did not correctly track file path names which could lead to empty, or '(null)' path names in the PATH audit records. This update fixes the bug by correctly tracking file path names and displaying the names in the audit PATH records.
(BZ#1197746)

* Due to a change in the internal representation of field types, AUDIT_LOGINUID set to -1 (4294967295) by the audit API was asymmetrically converted to an AUDIT_LOGINUID_SET field with a value of 0, unrecognized by an older audit API. To fix this bug, the kernel takes note about the way the rule has been formulated and reports the rule in the originally given form. As a result, older versions of audit provide a report as expected, in the AUDIT_LOGINUID field type form, whereas the newer versions can migrate to the new AUDIT_LOGINUID_SET filed type. (BZ#1197748)

* The GFS2 file system 'Splice Read' operation, which is used for the sendfile() function, was not properly allocating a required multi-block reservation structure in memory. Consequently, when the GFS2 block allocator was called to assign blocks of data, it attempted to dereference the structure, which resulted in a kernel panic. With this update, 'Splice read' operation properly allocates the necessary reservation structure in memory prior to calling the block allocator, and sendfile() thus works properly for GFS2. (BZ#1201256)

* Moving an Open vSwitch (OVS) internal vport to a different net name space and subsequently deleting that name space led to a kernel panic.
This bug has been fixed by removing the OVS internal vport at net name space deletion. (BZ#1202357)

* Previously, the kernel audit subsystem was not correctly handling file and directory moves, leading to audit records that did not match the audit file watches. This fix correctly handles moves such that the audit file watches work correctly. (BZ#1202358)

* Due to a regression, the crypto adapter could not be set online. A patch has been provided that fixes the device registration process so that the device can be used also before the registration process is completed, thus fixing this bug. (BZ#1205300)

* Due to incorrect calculation for entropy during the entropy addition, the amount of entropy in the /dev/random file could be overestimated. The formula for the entropy addition has been changed, thus fixing this bug. (BZ#1211288)

* Previously, the ansi_cprng and drbg utilities did not obey the call convention and returned the positive value on success instead of the correct value of zero. Consequently, Internet Protocol Security (IPsec) terminated unexpectedly when ansi_cprng or drbg were used.
With this update, ansi_cprng and drbg have been changed to return zero on success, and IPsec now functions correctly. (BZ#1211487)

* Due to a failure to clear the timestamp flag when reusing a tx descriptor in the mlx4_en driver, programs that did not request a hardware timestamp packet on their sent data received it anyway, resulting in unexpected behavior in certain applications. With this update, when reusing the tx descriptor in the mlx4_en driver in the aforementioned situation, the hardware timestamp flag is cleared, and applications now behave as expected. (BZ#1209240)

All kernel users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.

Updated kernel-rt packages that fix one security issue, several bugs, and add various enhancements are now available for Red Hat Enterprise MRG 2.5.

Red Hat Product Security has rated this update as having Important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

The kernel-rt packages contain the Linux kernel, the core of any Linux operating system.

* A buffer overflow flaw was found in the way the Linux kernel's Intel AES-NI instructions optimized version of the RFC4106 GCM mode decryption functionality handled fragmented packets. A remote attacker could use this flaw to crash, or potentially escalate their privileges on, a system over a connection with an active AEC-GCM mode IPSec security association. (CVE-2015-3331, Important)

This update provides a build of the kernel-rt package for Red Hat Enterprise MRG 2.5, which is layered on Red Hat Enterprise Linux 6.
The kernel-rt sources have been updated to include fixes for the following issues :

* Audit subsystem not resolving path name on directory watches

* audit watches do not track correctly after a rename

* auditctl output is changed in RHEL 7

* megaraid_sas: non-booting system with intel_iommu=on kernel parameter

* GFS2: kernel NULL pointer dereference in gfs2_inplace_reserve

* Crypto adapter cannot be brought online - affect all HW

* crypto/seqiv.c: wrong check of return code from crypto_rng_get_bytes

* Backport crypto: sha256_ssse3 - also test for BMI2

* NULL pointer at team_handle_frame+0x62/0x100 [team]

* AES CTR x86_64 'by8' AVX optimization

* Intel RDSEED - Fix for entropy counting

* Intel SHA1 multi-buffer crypto implementation

* Intel SHA1 AVX2 optimization support

* mlx4_en: HW timestamp ends up in error queue of socket which does not have SO_TIMESTAMPING enabled

(BZ#1213945)

All kernel-rt users are advised to upgrade to these updated packages, which correct these issues and add these enhancements. The system must be rebooted for this update to take effect.

The remote Oracle Linux 7 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2015-0987 advisory.

  - The __driver_rfc4106_decrypt function in arch/x86/crypto/aesni-intel_glue.c in the Linux kernel before     3.19.3 does not properly determine the memory locations used for encrypted data, which allows context-     dependent attackers to cause a denial of service (buffer overflow and system crash) or possibly execute     arbitrary code by triggering a crypto API call, as demonstrated by use of a libkcapi test program with an     AF_ALG(aead) socket. (CVE-2015-3331)

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

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

  - CVE-2014-8159     It was found that the Linux kernel's InfiniBand/RDMA     subsystem did not properly sanitize input parameters     while registering memory regions from user space via the     (u)verbs API. A local user with access to a     /dev/infiniband/uverbsX device could use this flaw to     crash the system or, potentially, escalate their     privileges on the system.

  - CVE-2014-9715     It was found that the netfilter connection tracking     subsystem used too small a type as an offset within each     connection's data structure, following a bug fix in     Linux 3.2.33 and 3.6. In some configurations, this would     lead to memory corruption and crashes (even without     malicious traffic). This could potentially also result     in violation of the netfilter policy or remote code     execution.

  This can be mitigated by disabling connection tracking   accounting:sysctl net.netfilter.nf_conntrack_acct=0

  - CVE-2015-2041     Sasha Levin discovered that the LLC subsystem exposed     some variables as sysctls with the wrong type. On a     64-bit kernel, this possibly allows privilege escalation     from a process with CAP_NET_ADMIN capability; it also     results in a trivial information leak.

  - CVE-2015-2042     Sasha Levin discovered that the RDS subsystem exposed     some variables as sysctls with the wrong type. On a     64-bit kernel, this results in a trivial information     leak.

  - CVE-2015-2150     Jan Beulich discovered that Xen guests are currently     permitted to modify all of the (writable) bits in the     PCI command register of devices passed through to them.
    This in particular allows them to disable memory and I/O     decoding on the device unless the device is an SR-IOV     virtual function, which can result in denial of service     to the host.

  - CVE-2015-2830     Andrew Lutomirski discovered that when a 64-bit task on     an amd64 kernel makes a fork(2) or clone(2) system call     using int $0x80, the 32-bit compatibility flag is set     (correctly) but is not cleared on return. As a result,     both seccomp and audit will misinterpret the following     system call by the task(s), possibly leading to a     violation of security policy.

  - CVE-2015-2922     Modio AB discovered that the IPv6 subsystem would     process a router advertisement that specifies no route     but only a hop limit, which would then be applied to the     interface that received it. This can result in loss of     IPv6 connectivity beyond the local network.

  This may be mitigated by disabling processing of IPv6 router   advertisements if they are not needed:sysctl   net.ipv6.conf.default.accept_ra=0sysctl   net.ipv6.conf.<interface>.accept_ra=0

  - CVE-2015-3331     Stephan Mueller discovered that the optimised     implementation of RFC4106 GCM for x86 processors that     support AESNI miscalculated buffer addresses in some     cases. If an IPsec tunnel is configured to use this mode     (also known as AES-GCM-ESP) this can lead to memory     corruption and crashes (even without malicious traffic).
    This could potentially also result in remote code     execution.

  - CVE-2015-3332     Ben Hutchings discovered that the TCP Fast Open feature     regressed in Linux 3.16.7-ckt9, resulting in a kernel     BUG when it is used. This can be used as a local denial     of service.

  - CVE-2015-3339     It was found that the execve(2) system call can race     with inode attribute changes made by chown(2). Although     chown(2) clears the setuid/setgid bits of a file if it     changes the respective owner ID, this race condition     could result in execve(2) setting effective uid/gid to     the new owner ID, a privilege escalation.

ID	Name	Product	Family	Severity
124811	EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1487)	Nessus	Huawei Local Security Checks	high
124808	EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1484)	Nessus	Huawei Local Security Checks	critical
90019	OracleVM 3.2 : kernel-uek (OVMSA-2016-0037)	Nessus	OracleVM Local Security Checks	critical
85764	SUSE SLES11 Security Update : kernel (SUSE-SU-2015:1478-1)	Nessus	SuSE Local Security Checks	medium
84545	SUSE SLED11 / SLES11 Security Update : kernel (SUSE-SU-2015:1174-1)	Nessus	SuSE Local Security Checks	medium
84486	RHEL 6 : kernel (RHSA-2015:1199)	Nessus	Red Hat Local Security Checks	high
84227	SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2015:1071-1)	Nessus	SuSE Local Security Checks	medium
84119	Ubuntu 12.04 LTS : linux vulnerabilities (USN-2631-1)	Nessus	Ubuntu Local Security Checks	high
84091	CentOS 6 : kernel (CESA-2015:1081)	Nessus	CentOS Local Security Checks	high
84078	Scientific Linux Security Update : kernel on SL6.x i386/x86_64 (20150609)	Nessus	Scientific Linux Local Security Checks	high
84075	RHEL 6 : kernel (RHSA-2015:1081)	Nessus	Red Hat Local Security Checks	medium
84073	Oracle Linux 6 : kernel (ELSA-2015-1081)	Nessus	Oracle Linux Local Security Checks	critical
83762	Ubuntu 14.10 : linux vulnerabilities (USN-2616-1)	Nessus	Ubuntu Local Security Checks	high
83761	Ubuntu 14.04 LTS : Linux kernel (Utopic HWE) vulnerabilities (USN-2615-1)	Nessus	Ubuntu Local Security Checks	medium
83760	Ubuntu 14.04 LTS : Linux kernel vulnerabilities (USN-2614-1)	Nessus	Ubuntu Local Security Checks	medium
83759	Ubuntu 12.04 LTS : linux-lts-trusty vulnerabilities (USN-2613-1)	Nessus	Ubuntu Local Security Checks	high
83493	Amazon Linux AMI : kernel (ALAS-2015-523)	Nessus	Amazon Linux Local Security Checks	high
83485	OracleVM 3.3 : kernel-uek (OVMSA-2015-0060)	Nessus	OracleVM Local Security Checks	medium
83451	Scientific Linux Security Update : kernel on SL7.x x86_64 (20150512)	Nessus	Scientific Linux Local Security Checks	high
83449	Oracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2015-3036)	Nessus	Oracle Linux Local Security Checks	critical
83448	Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2015-3035)	Nessus	Oracle Linux Local Security Checks	medium
83424	RHEL 7 : kernel-rt (RHSA-2015:0981)	Nessus	Red Hat Local Security Checks	critical
83417	CentOS 7 : kernel (CESA-2015:0987)	Nessus	CentOS Local Security Checks	high
83410	RHEL 6 : MRG (RHSA-2015:0989)	Nessus	Red Hat Local Security Checks	high
83408	RHEL 7 : kernel (RHSA-2015:0987)	Nessus	Red Hat Local Security Checks	high
83402	Oracle Linux 7 : kernel (ELSA-2015-0987)	Nessus	Oracle Linux Local Security Checks	high
83065	Debian DSA-3237-1 : linux - security update	Nessus	Debian Local Security Checks	high

Detections

Analytics

CVE-2015-3331

medium

Tenable Plugins

high

critical

critical

medium

medium

high

medium

high

high

high

medium

critical

high

medium

medium

high

high

medium

high

critical

medium

critical

high

high

high

high

high