An issue was discovered in fs/xfs/libxfs/xfs_inode_buf.c in the Linux kernel through 4.17.3. 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.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2019-2029 advisory.

    - [scsi] scsi: megaraid_sas: return error when create DMA pool failed (Tomas Henzl) [1712861]     {CVE-2019-11810}
    - [net] tcp: enforce tcp_min_snd_mss in tcp_mtu_probing() (Florian Westphal) [1719915] {CVE-2019-11479}
    - [net] tcp: add tcp_min_snd_mss sysctl (Florian Westphal) [1719915] {CVE-2019-11479}
    - [net] tcp: limit payload size of sacked skbs (Florian Westphal) [1719595] {CVE-2019-11477}
    - [net] tcp: pass previous skb to tcp_shifted_skb() (Florian Westphal) [1719595] {CVE-2019-11477}
    - [net] tcp: tcp_fragment() should apply sane memory limits (Florian Westphal) [1719850] {CVE-2019-11478}
    - [mm] mincore.c: make mincore() more conservative (Rafael Aquini) [1664199] {CVE-2019-5489}
    - [kernel] alarmtimer: Prevent overflow for relative nanosleep (Artem Savkov) [1653677] {CVE-2018-13053}
    - [fs] ext4: zero out the unused memory region in the extent tree block (Lukas Czerner) [1715280]     {CVE-2019-11833}
    - [vhost] vsock: add weight support (Jason Wang) [1702943] {CVE-2019-3900}
    - [vhost] vhost_net: fix possible infinite loop (Jason Wang) [1702943] {CVE-2019-3900}
    - [vhost] introduce vhost_exceeds_weight() (Jason Wang) [1702943] {CVE-2019-3900}
    - [vhost] vhost_net: introduce vhost_exceeds_weight() (Jason Wang) [1702943] {CVE-2019-3900}
    - [vhost] vhost_net: use packet weight for rx handler, too (Jason Wang) [1702943] {CVE-2019-3900}
    - [vhost] vhost-net: set packet weight of tx polling to 2 * vq size (Jason Wang) [1702943] {CVE-2019-3900}
    - [x86] kvm: x86: use correct privilege level for sgdt/sidt/fxsave/fxrstor access (Paolo Bonzini)     [1657358] {CVE-2018-10853}
    - [x86] kvm: x86: pass kvm_vcpu to kvm_read_guest_virt and kvm_write_guest_virt_system (Paolo Bonzini)     [1657358] {CVE-2018-10853}
    - [x86] kvm: x86: introduce linear_{read,write}_system (Paolo Bonzini) [1657358] {CVE-2018-10853}
    - [char] ipmi_si: fix use-after-free of resource->name (Tony Camuso) [1714408] {CVE-2019-11811}
    - [fs] sunrpc: make visible processing error in bc_svc_process() ('J. Bruce Fields') [1653675]     {CVE-2018-16884}
    - [fs] sunrpc: remove unused xpo_prep_reply_hdr callback ('J. Bruce Fields') [1653675] {CVE-2018-16884}
    - [fs] sunrpc: remove svc_tcp_bc_class ('J. Bruce Fields') [1653675] {CVE-2018-16884}
    - [fs] sunrpc: replace svc_serv->sv_bc_xprt by boolean flag ('J. Bruce Fields') [1653675] {CVE-2018-16884}
    - [fs] sunrpc: use-after-free in svc_process_common() ('J. Bruce Fields') [1653675] {CVE-2018-16884}
    - [fs] svcauth_gss: Close connection when dropping an incoming message ('J. Bruce Fields') [1653675]     {CVE-2018-16884}
    - [x86] spectre: Fix an error message (Waiman Long) [1709296 1690335 1690348 1690358] {CVE-2018-12126     CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [documentation] x86/speculation/mds: Fix documentation typo (Waiman Long) [1709296 1690358 1690348     1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [documentation] Correct the possible MDS sysfs values (Waiman Long) [1709296 1690358 1690348 1690335]     {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [documentation] x86/mds: Add MDSUM variant to the MDS documentation (Waiman Long) [1709296 1690358     1690348 1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation/mds: Add 'mitigations=' support for MDS (Waiman Long) [1709296 1690358 1690348     1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [documentation] s390/speculation: Support 'mitigations=' cmdline option (Waiman Long) [1709296 1690358     1690348 1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [documentation] powerpc/speculation: Support 'mitigations=' cmdline option (Waiman Long) [1709296     1690358 1690348 1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [documentation] x86/speculation: Support 'mitigations=' cmdline option (Waiman Long) [1709296 1690358     1690348 1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [kernel] cpu/speculation: Add 'mitigations=' cmdline option (Waiman Long) [1709296 1690358 1690348     1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation/l1tf: Increase l1tf memory limit for Nehalem+ (Waiman Long) [1709296 1690358 1690348     1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] spectre: Simplify spectre_v2 command line parsing (Waiman Long) [1709296 1690358 1690348 1690335]     {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation/mds: Properly set/clear mds_idle_clear static key (Waiman Long) [1709296 1690358     1690348 1690335 1707292] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation/mds: Print SMT vulnerable on MSBDS with mitigations off (Waiman Long) [1709296 1690358     1690348 1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation/mds: Fix comment (Waiman Long) [1709296 1690358 1690348 1690335] {CVE-2018-12126     CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation/mds: Add SMT warning message (Waiman Long) [1709296 1690358 1690348 1690335]     {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation: Move arch_smt_update() call to after mitigation decisions (Waiman Long) [1709296     1690358 1690348 1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation/mds: Add mds=full, nosmt cmdline option (Waiman Long) [1709296 1690358 1690348     1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [kernel] x86/speculation: Remove redundant arch_smt_update() invocation (Waiman Long) [1709296 1690358     1690348 1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] spec_ctrl: Update MDS mitigation status after late microcode load (Waiman Long) [1709296 1690358     1690348 1690335 1710501 1710498] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] spec_ctrl: Add debugfs x86/smt_present file (Waiman Long) [1709296 1690358 1690348 1690335]     {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] spec_ctrl: Disable automatic enabling of STIBP with SMT on (Waiman Long) [1709296 1690358 1690348     1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [documentation] documentation: Add MDS vulnerability documentation (Waiman Long) [1709296 1690358     1690348 1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [documentation] documentation: Move L1TF to separate directory (Waiman Long) [1709296 1690358 1690348     1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [documentation] x86/speculation/mds: Add mitigation mode VMWERV (Waiman Long) [1709296 1690358 1690348     1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation/mds: Add sysfs reporting for MDS (Waiman Long) [1709296 1690358 1690348 1690335]     {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation/mds: Add mitigation control for MDS (Waiman Long) [1709296 1690358 1690348 1690335]     {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [documentation] x86/speculation/mds: Conditionally clear CPU buffers on idle entry (Waiman Long)     [1709296 1690358 1690348 1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] kvm/vmx: Add MDS protection when L1D Flush is not active (Waiman Long) [1709296 1690358 1690348     1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation/mds: Clear CPU buffers on exit to user (Waiman Long) [1709296 1690358 1690348 1690335]     {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [documentation] x86/speculation/mds: Add mds_clear_cpu_buffers() (Waiman Long) [1709296 1690358 1690348     1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] kvm: Expose X86_FEATURE_MD_CLEAR to guests (Waiman Long) [1709296 1690358 1690348 1690335]     {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation/mds: Add BUG_MSBDS_ONLY (Waiman Long) [1709296 1690358 1690348 1690335]     {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation/mds: Add basic bug infrastructure for MDS (Waiman Long) [1709296 1690358 1690348     1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation: Consolidate CPU whitelists (Waiman Long) [1709296 1690358 1690348 1690335]     {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] msr-index: Cleanup bit defines (Waiman Long) [1709296 1690358 1690348 1690335] {CVE-2018-12126     CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] l1tf: Show actual SMT state (Waiman Long) [1709296 1690358 1690348 1690335] {CVE-2018-12126     CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation: Simplify sysfs report of VMX L1TF vulnerability (Waiman Long) [1709296 1690358     1690348 1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [kernel] x86/speculation: Rework SMT state change (Waiman Long) [1709296 1690358 1690348 1690335]     {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation: Disable STIBP when enhanced IBRS is in use (Waiman Long) [1709296 1690358 1690348     1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation: Move STIPB/IBPB string conditionals out of cpu_show_common() (Waiman Long) [1709296     1690358 1690348 1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation: Enable cross-hyperthread spectre v2 STIBP mitigation (Waiman Long) [1709296 1690358     1690348 1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] spectre_v2: Make spectre_v2_mitigation mode available (Waiman Long) [1709296 1690358 1690348     1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] spec_ctrl: Add X86_FEATURE_USE_IBPB (Waiman Long) [1709296 1690358 1690348 1690335]     {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] spec_ctrl: Add casting to fix compilation error (Waiman Long) [1709296 1690358 1690348 1690335]     {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [tools] x86/cpu: Sanitize FAM6_ATOM naming (Waiman Long) [1709296 1690358 1690348 1690335]     {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] cpufeatures: Add Intel PCONFIG cpufeature (Waiman Long) [1709296 1690358 1690348 1690335]     {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}

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 version of AOS installed on the remote host is prior to 5.16.0.1. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AOS-5.16.0.1 advisory.

  - OpenSLP as used in ESXi and the Horizon DaaS appliances has a heap overwrite issue. VMware has evaluated     the severity of this issue to be in the Critical severity range with a maximum CVSSv3 base score of 9.8.
    (CVE-2019-5544)

  - Empty or malformed p256-ECDH public keys may trigger a segmentation fault due values being improperly     sanitized before being copied into memory and used. This vulnerability affects Firefox ESR < 60.8, Firefox     < 68, and Thunderbird < 60.8. (CVE-2019-11729)

  - When encrypting with a block cipher, if a call to NSC_EncryptUpdate was made with data smaller than the     block size, a small out of bounds write could occur. This could have caused heap corruption and a     potentially exploitable crash. This vulnerability affects Thunderbird < 68.3, Firefox ESR < 68.3, and     Firefox < 71. (CVE-2019-11745)

  - An issue was discovered in the Linux kernel before 4.18.7. In block/blk-core.c, there is an
    __blk_drain_queue() use-after-free because a certain error case is mishandled. (CVE-2018-20856)

  - A flaw was found in the Linux kernel. A heap based buffer overflow in mwifiex_uap_parse_tail_ies function     in drivers/net/wireless/marvell/mwifiex/ie.c might lead to memory corruption and possibly other     consequences. (CVE-2019-10126)

  - A flaw that allowed an attacker to corrupt memory and possibly escalate privileges was found in the     mwifiex kernel module while connecting to a malicious wireless network. (CVE-2019-3846)

  - The Bluetooth BR/EDR specification up to and including version 5.1 permits sufficiently low encryption key     length and does not prevent an attacker from influencing the key length negotiation. This allows practical     brute-force attacks (aka KNOB) that can decrypt traffic and inject arbitrary ciphertext without the     victim noticing. (CVE-2019-9506)

  - An information disclosure vulnerability exists when certain central processing units (CPU) speculatively     access memory, aka 'Windows Kernel Information Disclosure Vulnerability'. This CVE ID is unique from     CVE-2019-1071, CVE-2019-1073. (CVE-2019-1125)

  - The Broadcom brcmfmac WiFi driver prior to commit 1b5e2423164b3670e8bc9174e4762d297990deff is vulnerable     to a heap buffer overflow. If the Wake-up on Wireless LAN functionality is configured, a malicious event     frame can be constructed to trigger an heap buffer overflow in the brcmf_wowl_nd_results function. This     vulnerability can be exploited with compromised chipsets to compromise the host, or when used in     combination with CVE-2019-9503, can be used remotely. In the worst case scenario, by sending specially-     crafted WiFi packets, a remote, unauthenticated attacker may be able to execute arbitrary code on a     vulnerable system. More typically, this vulnerability will result in denial-of-service conditions.
    (CVE-2019-9500)

  - Improper invalidation for page table updates by a virtual guest operating system for multiple Intel(R)     Processors may allow an authenticated user to potentially enable denial of service of the host system via     local access. (CVE-2018-12207)

  - Insufficient access control in subsystem for Intel (R) processor graphics in 6th, 7th, 8th and 9th     Generation Intel(R) Core(TM) Processor Families; Intel(R) Pentium(R) Processor J, N, Silver and Gold     Series; Intel(R) Celeron(R) Processor J, N, G3900 and G4900 Series; Intel(R) Atom(R) Processor A and E3900     Series; Intel(R) Xeon(R) Processor E3-1500 v5 and v6 and E-2100 Processor Families may allow an     authenticated user to potentially enable denial of service via local access. (CVE-2019-0154)

  - TSX Asynchronous Abort condition on some CPUs utilizing speculative execution may allow an authenticated     user to potentially enable information disclosure via a side channel with local access. (CVE-2019-11135)

  - A buffer overflow flaw was found, in versions from 2.6.34 to 5.2.x, in the way Linux kernel's vhost     functionality that translates virtqueue buffers to IOVs, logged the buffer descriptors during migration. A     privileged guest user able to pass descriptors with invalid length to the host when migration is underway,     could use this flaw to increase their privileges on the host. (CVE-2019-14835)

  - Insufficient access control in a subsystem for Intel (R) processor graphics in 6th, 7th, 8th and 9th     Generation Intel(R) Core(TM) Processor Families; Intel(R) Pentium(R) Processor J, N, Silver and Gold     Series; Intel(R) Celeron(R) Processor J, N, G3900 and G4900 Series; Intel(R) Atom(R) Processor A and E3900     Series; Intel(R) Xeon(R) Processor E3-1500 v5 and v6, E-2100 and E-2200 Processor Families; Intel(R)     Graphics Driver for Windows before 26.20.100.6813 (DCH) or 26.20.100.6812 and before 21.20.x.5077     (aka15.45.5077), i915 Linux Driver for Intel(R) Processor Graphics before versions 5.4-rc7, 5.3.11,     4.19.84, 4.14.154, 4.9.201, 4.4.201 may allow an authenticated user to potentially enable escalation of     privilege via local access. (CVE-2019-0155)

  - A flaw was found in the way Linux kernel KVM hypervisor before 4.18 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. (CVE-2018-10853)

  - The alarm_timer_nsleep function in kernel/time/alarmtimer.c in the Linux kernel through 4.17.3 has an     integer overflow via a large relative timeout because ktime_add_safe is not used. (CVE-2018-13053)

  - An issue was discovered in fs/xfs/xfs_icache.c in the Linux kernel through 4.17.3. 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. (CVE-2018-13093)

  - An issue was discovered in fs/xfs/libxfs/xfs_attr_leaf.c in the Linux kernel through 4.17.3. An OOPS may     occur for a corrupted xfs image after xfs_da_shrink_inode() is called with a NULL bp. (CVE-2018-13094)

  - An issue was discovered in fs/xfs/libxfs/xfs_inode_buf.c in the Linux kernel through 4.17.3. 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. (CVE-2018-13095)

  - A flaw was found in the Linux Kernel where an attacker may be able to have an uncontrolled read to kernel-     memory from within a vm guest. A race condition between connect() and close() function may allow an     attacker using the AF_VSOCK protocol to gather a 4 byte information leak or possibly intercept or corrupt     AF_VSOCK messages destined to other clients. (CVE-2018-14625)

  - drivers/infiniband/core/ucma.c in the Linux kernel through 4.17.11 allows ucma_leave_multicast to access a     certain data structure after a cleanup step in ucma_process_join, which allows attackers to cause a denial     of service (use-after-free). (CVE-2018-14734)

  - arch/x86/kernel/paravirt.c in the Linux kernel before 4.18.1 mishandles certain indirect calls, which     makes it easier for attackers to conduct Spectre-v2 attacks against paravirtual guests. (CVE-2018-15594)

  - An issue was discovered in the Linux kernel before 4.18.6. 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. (CVE-2018-16658)

  - A flaw was found in the Linux kernel that allows the userspace to call memcpy_fromiovecend() and similar     functions with a zero offset and buffer length which causes the read beyond the buffer boundaries, in     certain cases causing a memory access fault and a system halt by accessing invalid memory address. This     issue only affects kernel version 3.10.x as shipped with Red Hat Enterprise Linux 7. (CVE-2018-16885)

  - Since Linux kernel version 3.2, the mremap() syscall performs TLB flushes after dropping pagetable locks.
    If a syscall such as ftruncate() removes entries from the pagetables of a task that is in the middle of     mremap(), a stale TLB entry can remain for a short time that permits access to a physical page after it     has been released back to the page allocator and reused. This is fixed in the following kernel versions:
    4.9.135, 4.14.78, 4.18.16, 4.19. (CVE-2018-18281)

  - An issue was discovered in the fd_locked_ioctl function in drivers/block/floppy.c in the Linux kernel     through 4.15.7. The floppy driver will copy a kernel pointer to user memory in response to the FDGETPRM     ioctl. An attacker can send the FDGETPRM ioctl and use the obtained kernel pointer to discover the     location of kernel code and data and bypass kernel security protections such as KASLR. (CVE-2018-7755)

  - Memory leak in the hwsim_new_radio_nl function in drivers/net/wireless/mac80211_hwsim.c in the Linux     kernel through 4.15.9 allows local users to cause a denial of service (memory consumption) by triggering     an out-of-array error case. (CVE-2018-8087)

  - In the hidp_process_report in bluetooth, there is an integer overflow. This could lead to an out of bounds     write with no additional execution privileges needed. User interaction is not needed for exploitation.
    Product: Android Versions: Android kernel Android ID: A-65853588 References: Upstream kernel.
    (CVE-2018-9363)

  - In hid_debug_events_read of drivers/hid/hid-debug.c, there is a possible out of bounds write due to a     missing bounds check. This could lead to local escalation of privilege with System execution privileges     needed. User interaction is not needed for exploitation. Product: Android Versions: Android kernel Android     ID: A-71361580. (CVE-2018-9516)

  - In pppol2tp_connect, there is possible memory corruption due to a use after free. This could lead to local     escalation of privilege with System execution privileges needed. User interaction is not needed for     exploitation. Product: Android. Versions: Android kernel. Android ID: A-38159931. (CVE-2018-9517)

  - The coredump implementation in the Linux kernel before 5.0.10 does not use locking or other mechanisms to     prevent vma layout or vma flags changes while it runs, which allows local users to obtain sensitive     information, cause a denial of service, or possibly have unspecified other impact by triggering a race     condition with mmget_not_zero or get_task_mm calls. This is related to fs/userfaultfd.c, mm/mmap.c,     fs/proc/task_mmu.c, and drivers/infiniband/core/uverbs_main.c. (CVE-2019-11599)

  - An issue was discovered in the Linux kernel before 5.0.7. A NULL pointer dereference can occur when     megasas_create_frame_pool() fails in megasas_alloc_cmds() in drivers/scsi/megaraid/megaraid_sas_base.c.
    This causes a Denial of Service, related to a use-after-free. (CVE-2019-11810)

  - fs/ext4/extents.c in the Linux kernel through 5.1.2 does not zero out the unused memory region in the     extent tree block, which might allow local users to obtain sensitive information by reading uninitialized     data in the filesystem. (CVE-2019-11833)

  - A heap address information leak while using L2CAP_GET_CONF_OPT was discovered in the Linux kernel before     5.1-rc1. (CVE-2019-3459)

  - A heap data infoleak in multiple locations including L2CAP_PARSE_CONF_RSP was found in the Linux kernel     before 5.1-rc1. (CVE-2019-3460)

  - A flaw was found in the Linux kernel's vfio interface implementation that permits violation of the user's     locked memory limit. If a device is bound to a vfio driver, such as vfio-pci, and the local attacker is     administratively granted ownership of the device, it may cause a system memory exhaustion and thus a     denial of service (DoS). Versions 3.10, 4.14 and 4.18 are vulnerable. (CVE-2019-3882)

  - An infinite loop issue was found in the vhost_net kernel module in Linux Kernel up to and including     v5.1-rc6, while handling incoming packets in handle_rx(). It could occur if one end sends packets faster     than the other end can process them. A guest user, maybe remote one, could use this flaw to stall the     vhost_net kernel thread, resulting in a DoS scenario. (CVE-2019-3900)

  - The mincore() implementation in mm/mincore.c in the Linux kernel through 4.19.13 allowed local attackers     to observe page cache access patterns of other processes on the same system, potentially allowing sniffing     of secret information. (Fixing this affects the output of the fincore program.) Limited remote     exploitation may be possible, as demonstrated by latency differences in accessing public files from an     Apache HTTP Server. (CVE-2019-5489)

  - The KVM implementation in the Linux kernel through 4.20.5 has an Information Leak. (CVE-2019-7222)

  - A buffer overflow in the fribidi_get_par_embedding_levels_ex() function in lib/fribidi-bidi.c of GNU     FriBidi through 1.0.7 allows an attacker to cause a denial of service or possibly execute arbitrary code     by delivering crafted text content to a user, when this content is then rendered by an application that     uses FriBidi for text layout calculations. Examples include any GNOME or GTK+ based application that uses     Pango for text layout, as this internally uses FriBidi for bidirectional text layout. For example, the     attacker can construct a crafted text file to be opened in GEdit, or a crafted IRC message to be viewed in     HexChat. (CVE-2019-18397)

  - An out-of-bounds access issue was found in the Linux kernel, all versions through 5.3, in the way Linux     kernel's KVM hypervisor implements the Coalesced MMIO write operation. It operates on an MMIO ring buffer     'struct kvm_coalesced_mmio' object, wherein write indices 'ring->first' and 'ring->last' value could be     supplied by a host user-space process. An unprivileged host user or process with access to '/dev/kvm'     device could use this flaw to crash the host kernel, resulting in a denial of service or potentially     escalating privileges on the system. (CVE-2019-14821)

  - In the Linux kernel, a certain net/ipv4/tcp_output.c change, which was properly incorporated into 4.16.12,     was incorrectly backported to the earlier longterm kernels, introducing a new vulnerability that was     potentially more severe than the issue that was intended to be fixed by backporting. Specifically, by     adding to a write queue between disconnection and re-connection, a local attacker can trigger multiple     use-after-free conditions. This can result in a kernel crash, or potentially in privilege escalation.
    NOTE: this affects (for example) Linux distributions that use 4.9.x longterm kernels before 4.9.190 or     4.14.x longterm kernels before 4.14.139. (CVE-2019-15239)

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

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

  - In do_epoll_ctl and ep_loop_check_proc of eventpoll.c,     there is a possible use after free due to a logic     error. This could lead to local escalation of privilege     with no additional execution privileges needed. User     interaction is not needed for     exploitation.(CVE-2020-0466)

  - fs/nfsd/nfs3xdr.c in the Linux kernel through 5.10.8,     when there is an NFS export of a subdirectory of a     filesystem, allows remote attackers to traverse to     other parts of the filesystem via READDIRPLUS. NOTE:
    some parties argue that such a subdirectory export is     not intended to prevent this attack see also the     exports(5) no_subtree_check default     behavior.(CVE-2021-3178)

  - An issue was discovered in the Linux kernel through     5.11.3. A kernel pointer leak can be used to determine     the address of the iscsi_transport structure. When an     iSCSI transport is registered with the iSCSI subsystem,     the transport's handle is available to unprivileged     users via the sysfs file system, at     /sys/class/iscsi_transport/$TRANSPORT_NAME/handle. When     read, the show_transport_handle function (in     drivers/scsi/scsi_transport_iscsi.c) is called, which     leaks the handle. This handle is actually the pointer     to an iscsi_transport struct in the kernel module's     global variables.(CVE-2021-27363)

  - An issue was discovered in the Linux kernel through     5.11.3. drivers/scsi/scsi_transport_iscsi.c is     adversely affected by the ability of an unprivileged     user to craft Netlink messages.(CVE-2021-27364)

  - A race condition was found in the Linux kernels     implementation of the floppy disk drive controller     driver software. The impact of this issue is lessened     by the fact that the default permissions on the floppy     device (/dev/fd0) are restricted to root. If the     permissions on the device have changed the impact     changes greatly. In the default configuration root (or     equivalent) permissions are required to attack this     flaw.(CVE-2021-20261)

  - In fs/ocfs2/cluster/nodemanager.c in the Linux kernel     before 4.15, local users can cause a denial of service     (NULL pointer dereference and BUG) because a required     mutex is not used.(CVE-2017-18216)

  - The omninet_open function in     drivers/usb/serial/omninet.c in the Linux kernel before     4.10.4 allows local users to cause a denial of service     (tty exhaustion) by leveraging reference count     mishandling.(CVE-2017-8925)

  - A flaw was found in the way memory resources were freed     in the unix_stream_recvmsg function in the Linux kernel     when a signal was pending. This flaw allows an     unprivileged local user to crash the system by     exhausting available memory. The highest threat from     this vulnerability is to system     availability.(CVE-2021-20265)

  - A flaw was found in the JFS filesystem code in the     Linux Kernel which allows a local attacker with the     ability to set extended attributes to panic the system,     causing memory corruption or escalating privileges. The     highest threat from this vulnerability is to     confidentiality, integrity, as well as system     availability.(CVE-2020-27815)

  - An out-of-bounds (OOB) memory access flaw was found in     x25_bind in net/x25/af_x25.c in the Linux kernel     version v5.12-rc5. A bounds check failure allows a     local attacker with a user account on the system to     gain access to out-of-bounds memory, leading to a     system crash or a leak of internal kernel information.
    The highest threat from this vulnerability is to     confidentiality, integrity, as well as system     availability.(CVE-2020-35519)

  - There is a flaw reported in the Linux kernel in     versions before 5.9 in     drivers/gpu/drm/nouveau/nouveau_sgdma.c in     nouveau_sgdma_create_ttm in Nouveau DRM subsystem. The     issue results from the lack of validating the existence     of an object prior to performing operations on the     object. An attacker with a local account with a root     privilege, can leverage this vulnerability to escalate     privileges and execute code in the context of the     kernel.(CVE-2021-20292)

  - In drivers/pci/hotplug/rpadlpar_sysfs.c in the Linux     kernel through 5.11.8, the RPA PCI Hotplug driver has a     user-tolerable buffer overflow when writing a new     device name to the driver from userspace, allowing     userspace to write data to the kernel stack frame     directly. This occurs because add_slot_store and     remove_slot_store mishandle drc_name '\0' termination,     aka CID-cc7a0bb058b8.(CVE-2021-28972)

  - A race condition was discovered in get_old_root in     fs/btrfs/ctree.c in the Linux kernel through 5.11.8. It     allows attackers to cause a denial of service (BUG)     because of a lack of locking on an extent buffer before     a cloning operation, aka     CID-dbcc7d57bffc.(CVE-2021-28964)

  - An issue was discovered in the Linux kernel before     5.11.7. usbip_sockfd_store in     drivers/usb/usbip/stub_dev.c allows attackers to cause     a denial of service (GPF) because the stub-up sequence     has race conditions during an update of the local and     shared status, aka CID-9380afd6df70.(CVE-2021-29265)

  - BPF JIT compilers in the Linux kernel through 5.11.12     have incorrect computation of branch displacements,     allowing them to execute arbitrary code within the     kernel context. This affects     arch/x86/net/bpf_jit_comp.c and     arch/x86/net/bpf_jit_comp32.c.(CVE-2021-29154)

  - The KVM implementation in the Linux kernel through     4.14.7 allows attackers to obtain potentially sensitive     information from kernel memory, aka a write_mmio     stack-based out-of-bounds read, related to     arch/x86/kvm/x86.c and     include/trace/events/kvm.h.(CVE-2017-17741)

  - An issue was discovered in the Linux kernel before     5.11.3 when a webcam device exists. video_usercopy in     drivers/media/v4l2-core/v4l2-ioctl.c has a memory leak     for large arguments, aka     CID-fb18802a338b.(CVE-2021-30002)

  - An issue was discovered in the Linux kernel through     4.17.10. There is an invalid pointer dereference in
    __del_reloc_root() in fs/btrfs/relocation.c when     mounting a crafted btrfs image, related to removing     reloc rb_trees when reloc control has not been     initialized.(CVE-2018-14609)

  - An issue was discovered in     fs/xfs/libxfs/xfs_inode_buf.c in the Linux kernel     through 4.17.3. 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.(CVE-2018-13095)

  - The vmw_gb_surface_define_ioctl function in     drivers/gpu/drm/vmwgfx/vmwgfx_surface.c in the Linux     kernel through 4.10.7 does not validate certain levels     data, which allows local users to cause a denial of     service (system hang) via a crafted ioctl call for a     /dev/dri/renderD* device.(CVE-2017-7346)

  - The klsi_105_get_line_state function in     drivers/usb/serial/kl5kusb105.c in the Linux kernel     before 4.9.5 places uninitialized heap-memory contents     into a log entry upon a failure to read the line     status, which allows local users to obtain sensitive     information by reading the log.(CVE-2017-5549)

  - An integer overflow in the uvesafb_setcmap function in     drivers/video/fbdev/uvesafb.c in the Linux kernel     before 4.17.4 could result in local attackers being     able to crash the kernel or potentially elevate     privileges because kmalloc_array is not     used.(CVE-2018-13406)

  - In the Linux kernel before version 4.12, Kerberos 5     tickets decoded when using the RXRPC keys incorrectly     assumes the size of a field. This could lead to the     size-remaining variable wrapping and the data pointer     going over the end of the buffer. This could possibly     lead to memory corruption and possible privilege     escalation.(CVE-2017-7482)

  - drivers/net/usb/rtl8150.c in the Linux kernel 4.9.x     before 4.9.11 interacts incorrectly with the     CONFIG_VMAP_STACK option, which allows local users to     cause a denial of service (system crash or memory     corruption) or possibly have unspecified other impact     by leveraging use of more than one virtual page for a     DMA scatterlist.(CVE-2017-8069)

  - An issue was discovered in the Linux kernel through     5.11.3. Certain iSCSI data structures do not have     appropriate length constraints or checks, and can     exceed the PAGE_SIZE value. An unprivileged user can     send a Netlink message that is associated with iSCSI,     and has a length up to the maximum length of a Netlink     message.(CVE-2021-27365)

  - A flaw was found in the Nosy driver in the Linux     kernel. This issue allows a device to be inserted twice     into a doubly-linked list, leading to a use-after-free     when one of these devices is removed. The highest     threat from this vulnerability is to confidentiality,     integrity, as well as system availability. Versions     before kernel 5.12-rc6 are affected(CVE-2021-3483)

  - An issue was discovered in the FUSE filesystem     implementation in the Linux kernel before 5.10.6, aka     CID-5d069dbe8aaf. fuse_do_getattr() calls     make_bad_inode() in inappropriate situations, causing a     system crash. NOTE: the original fix for this     vulnerability was incomplete, and its incompleteness is     tracked as CVE-2021-28950.(CVE-2020-36322)

  - An out-of-bounds (OOB) memory write flaw was found in     list_devices in drivers/md/dm-ioctl.c in the     Multi-device driver module in the Linux kernel before     5.12. A bound check failure allows an attacker with     special user (CAP_SYS_ADMIN) privilege to gain access     to out-of-bounds memory leading to a system crash or a     leak of internal kernel information. The highest threat     from this vulnerability is to system     availability.(CVE-2021-31916)

  - A vulnerability was found in Linux Kernel, where a     refcount leak in llcp_sock_connect() causing     use-after-free which might lead to privilege     escalations.(CVE-2020-25671)

  - A vulnerability was found in Linux Kernel where     refcount leak in llcp_sock_bind() causing     use-after-free which might lead to privilege     escalations.(CVE-2020-25670)

  - A memory leak vulnerability was found in Linux kernel     in llcp_sock_connect(CVE-2020-25672)

  - The Linux kernel before 5.11.14 has a use-after-free in     cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the     CIPSO and CALIPSO refcounting for the DOI definitions     is mishandled, aka CID-ad5d07f4a9cd. This leads to     writing an arbitrary value.(CVE-2021-33033)

  - Use After Free vulnerability in nfc sockets in the     Linux Kernel before 5.12.4 allows local attackers to     elevate their privileges. In typical configurations,     the issue can only be triggered by a privileged local     user with the CAP_NET_RAW capability.(CVE-2021-23134)

  - A flaw use-after-free in function     hci_sock_bound_ioctl() of the Linux kernel HCI     subsystem was found in the way user detaches bluetooth     dongle or other way triggers unregister bluetooth     device event. A local user could use this flaw to crash     the system or escalate their privileges on the     system.(CVE-2021-3573)

  - An issue was discovered in the Linux kernel through     5.10.11. PI futexes have a kernel stack use-after-free     during fault handling, allowing local users to execute     code in the kernel, aka     CID-34b1a1ce1458.(CVE-2021-3347)

  - A vulnerability was found in Linux kernel where     non-blocking socket in llcp_sock_connect() leads to     leak and eventually hanging-up the     system.(CVE-2020-25673)

  - net/bluetooth/hci_request.c in the Linux kernel through     5.12.2 has a race condition for removal of the HCI     controller.(CVE-2021-32399)

  - In all Qualcomm products with Android releases from CAF     using the Linux kernel, during DMA allocation, due to     wrong data type of size, allocation size gets truncated     which makes allocation succeed when it should     fail.(CVE-2017-9725)

  - A flaw double-free memory corruption in the Linux     kernel HCI device initialization subsystem was found in     the way user attach malicious HCI TTY Bluetooth device.
    A local user could use this flaw to crash the system.
    This flaw affects all the Linux kernel versions     starting from 3.13.(CVE-2021-3564)

  - A flaw was found in the CAN BCM networking protocol in     the Linux kernel, where a local attacker can abuse a     flaw in the CAN subsystem to corrupt memory, crash the     system or escalate privileges.(CVE-2021-3609)

  - The ip6gre_err function in net/ipv6/ip6_gre.c in the     Linux kernel allows remote attackers to have     unspecified impact via vectors involving GRE flags in     an IPv6 packet, which trigger an out-of-bounds     access.(CVE-2017-5897)

  - An Out-of-Bounds Read was discovered in     arch/arm/mach-footbridge/personal-pci.c in the Linux     kernel through 5.12.11 because of the lack of a check     for a value that shouldn't be negative, e.g., access to     element -2 of an array, aka     CID-298a58e165e4.(CVE-2021-32078)

  - In the Linux kernel before 4.20.8,     kvm_ioctl_create_device in virt/kvm/kvm_main.c     mishandles reference counting because of a race     condition, leading to a use-after-free.(CVE-2019-6974)

  - In uvc_scan_chain_forward of uvc_driver.c, there is a     possible linked list corruption due to an unusual root     cause. This could lead to local escalation of privilege     in the kernel with no additional execution privileges     needed. User interaction is not needed for     exploitation.(CVE-2020-0404)

  - In create_pinctrl of core.c, there is a possible out of     bounds read due to a use after free. This could lead to     local information disclosure with no additional     execution privileges needed. User interaction is not     needed for exploitation.(CVE-2020-0427)

  - In kbd_keycode of keyboard.c, there is a possible out     of bounds write due to a missing bounds check. This     could lead to local escalation of privilege with no     additional execution privileges needed. User     interaction is not needed for exploitation.Product:
    AndroidVersions: Android kernelAndroid ID:
    A-144161459(CVE-2020-0431)

  - In blk_mq_queue_tag_busy_iter of blk-mq-tag.c, there is     a possible use after free due to improper locking. This     could lead to local escalation of privilege with no     additional execution privileges needed. User     interaction is not needed for     exploitation.(CVE-2020-0433)

  - In various methods of hid-multitouch.c, there is a     possible out of bounds write due to a missing bounds     check. This could lead to local escalation of privilege     with no additional execution privileges needed. User     interaction is not needed for     exploitation.(CVE-2020-0465)

  - A vulnerability was found in the Linux Kernel where the     function sunkbd_reinit having been scheduled by     sunkbd_interrupt before sunkbd being freed. Though the     dangling pointer is set to NULL in sunkbd_disconnect,     there is still an alias in sunkbd_reinit causing Use     After Free.(CVE-2020-25669)

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 Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4904-1 advisory.

    Ben Harris discovered that the Linux kernel would strip extended privilege attributes of files when     performing a failed unprivileged system call. A local attacker could use this to cause a denial of     service. (CVE-2015-1350)

    Andrey Konovalov discovered that the video4linux driver for Hauppauge HD PVR USB devices in the Linux     kernel did not properly handle some error conditions. A physically proximate attacker could use this to     cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-16644)

    It was discovered that the timer stats implementation in the Linux kernel allowed the discovery of a real     PID value while inside a PID namespace. A local attacker could use this to expose sensitive information.
    (CVE-2017-5967)

    Wen Xu discovered that the xfs file system implementation in the Linux kernel did not properly validate     the number of extents in an inode. An attacker could use this to construct a malicious xfs image that,     when mounted, could cause a denial of service (system crash). (CVE-2018-13095)

    It was discovered that the Fujitsu ES network device driver for the Linux kernel did not properly check     for errors in some situations, leading to a NULL pointer dereference. A local attacker could use this to     cause a denial of service. (CVE-2019-16231)

    It was discovered that the Marvell 8xxx Libertas WLAN device driver in the Linux kernel did not properly     check for errors in certain situations, leading to a NULL pointer dereference. A local attacker could     possibly use this to cause a denial of service. (CVE-2019-16232)

    It was discovered that the ADIS16400 IIO IMU Driver for the Linux kernel did not properly deallocate     memory in certain error conditions. A local attacker could use this to cause a denial of service (memory     exhaustion). (CVE-2019-19061)

    It was discovered that a race condition existed in the floppy device driver in the Linux kernel. An     attacker with access to the floppy device could use this to cause a denial of service (system crash) or     possibly execute arbitrary code. (CVE-2021-20261)

    Olivier Benjamin, Norbert Manthey, Martin Mazein, and Jan H. Schnherr discovered that the Xen     paravirtualization backend in the Linux kernel did not properly propagate errors to frontend drivers in     some situations. An attacker in a guest VM could possibly use this to cause a denial of service (host     domain crash). (CVE-2021-26930)

    Jan Beulich discovered that multiple Xen backends in the Linux kernel did not properly handle certain     error conditions under paravirtualization. An attacker in a guest VM could possibly use this to cause a     denial of service (host domain crash). (CVE-2021-26931)

    Jan Beulich discovered that the Xen netback backend in the Linux kernel did not properly handle certain     error conditions under paravirtualization. An attacker in a guest VM could possibly use this to cause a     denial of service (host domain crash). (CVE-2021-28038)

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 / 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4907-1 advisory.

    Wen Xu discovered that the xfs file system implementation in the Linux kernel did not properly validate     the number of extents in an inode. An attacker could use this to construct a malicious xfs image that,     when mounted, could cause a denial of service (system crash). (CVE-2018-13095)

    It was discovered that the priority inheritance futex implementation in the Linux kernel contained a race     condition, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of     service (system crash) or possibly execute arbitrary code. (CVE-2021-3347)

    It was discovered that the network block device (nbd) driver in the Linux kernel contained a use-after-     free vulnerability during device setup. A local attacker with access to the nbd device could use this to     cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-3348)

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.

An update for kernel is now available for Red Hat Enterprise Linux 7.

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

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

Security Fix(es) :

* Kernel: vhost_net: infinite loop while receiving packets leads to DoS (CVE-2019-3900)

* Kernel: page cache side channel attacks (CVE-2019-5489)

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

* kernel: l2tp: Race condition between pppol2tp_session_create() and l2tp_eth_create() (CVE-2018-9517)

* kernel: kvm: guest userspace to guest kernel write (CVE-2018-10853)

* kernel: use-after-free Read in vhost_transport_send_pkt (CVE-2018-14625)

* kernel: use-after-free in ucma_leave_multicast in drivers/infiniband/core/ ucma.c (CVE-2018-14734)

* kernel: Mishandling of indirect calls weakens Spectre mitigation for paravirtual guests (CVE-2018-15594)

* kernel: TLB flush happens too late on mremap (CVE-2018-18281)

* kernel: Heap address information leak while using L2CAP_GET_CONF_OPT (CVE-2019-3459)

* kernel: Heap address information leak while using L2CAP_PARSE_CONF_RSP (CVE-2019-3460)

* kernel: denial of service vector through vfio DMA mappings (CVE-2019-3882)

* kernel: fix race condition between mmget_not_zero()/get_task_mm() and core dumping (CVE-2019-11599)

* kernel: a NULL pointer dereference in drivers/scsi/megaraid/ megaraid_sas_base.c leading to DoS (CVE-2019-11810)

* kernel: fs/ext4/extents.c leads to information disclosure (CVE-2019-11833)

* kernel: Information exposure in fd_locked_ioctl function in drivers/block/ floppy.c (CVE-2018-7755)

* kernel: Memory leak in drivers/net/wireless/ mac80211_hwsim.c:hwsim_new_radio_nl() can lead to potential denial of service (CVE-2018-8087)

* kernel: HID: debug: Buffer overflow in hid_debug_events_read() in drivers/ hid/hid-debug.c (CVE-2018-9516)

* kernel: Integer overflow in the alarm_timer_nsleep function (CVE-2018-13053)

* kernel: NULL pointer dereference in lookup_slow function (CVE-2018-13093)

* kernel: NULL pointer dereference in xfs_da_shrink_inode function (CVE-2018-13094)

* kernel: NULL pointer dereference in fs/xfs/libxfs/xfs_inode_buf.c (CVE-2018-13095)

* kernel: Information leak in cdrom_ioctl_drive_status (CVE-2018-16658)

* kernel: out-of-bound read in memcpy_fromiovecend() (CVE-2018-16885)

* Kernel: KVM: leak of uninitialized stack contents to guest (CVE-2019-7222)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes :

For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.7 Release Notes linked from the References section.

Security Fix(es) :

  - Kernel: vhost_net: infinite loop while receiving packets     leads to DoS (CVE-2019-3900)

  - Kernel: page cache side channel attacks (CVE-2019-5489)

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

  - kernel: l2tp: Race condition between     pppol2tp_session_create() and l2tp_eth_create()     (CVE-2018-9517)

  - kernel: kvm: guest userspace to guest kernel write     (CVE-2018-10853)

  - kernel: use-after-free Read in vhost_transport_send_pkt     (CVE-2018-14625)

  - kernel: use-after-free in ucma_leave_multicast in     drivers/infiniband/core/ucma.c (CVE-2018-14734)

  - kernel: Mishandling of indirect calls weakens Spectre     mitigation for paravirtual guests (CVE-2018-15594)

  - kernel: TLB flush happens too late on mremap     (CVE-2018-18281)

  - kernel: Heap address information leak while using     L2CAP_GET_CONF_OPT (CVE-2019-3459)

  - kernel: Heap address information leak while using     L2CAP_PARSE_CONF_RSP (CVE-2019-3460)

  - kernel: denial of service vector through vfio DMA     mappings (CVE-2019-3882)

  - kernel: fix race condition between     mmget_not_zero()/get_task_mm() and core dumping     (CVE-2019-11599)

  - kernel: a NULL pointer dereference in     drivers/scsi/megaraid/megaraid_sas_base.c leading to DoS     (CVE-2019-11810)

  - kernel: fs/ext4/extents.c leads to information     disclosure (CVE-2019-11833)

  - kernel: Information exposure in fd_locked_ioctl function     in drivers/block/floppy.c (CVE-2018-7755)

  - kernel: Memory leak in     drivers/net/wireless/mac80211_hwsim.c:hwsim_new_radio_nl     () can lead to potential denial of service     (CVE-2018-8087)

  - kernel: HID: debug: Buffer overflow in     hid_debug_events_read() in drivers/hid/hid-debug.c     (CVE-2018-9516)

  - kernel: Integer overflow in the alarm_timer_nsleep     function (CVE-2018-13053)

  - kernel: NULL pointer dereference in lookup_slow function     (CVE-2018-13093)

  - kernel: NULL pointer dereference in xfs_da_shrink_inode     function (CVE-2018-13094)

  - kernel: NULL pointer dereference in     fs/xfs/libxfs/xfs_inode_buf.c (CVE-2018-13095)

  - kernel: Information leak in cdrom_ioctl_drive_status     (CVE-2018-16658)

  - kernel: out-of-bound read in memcpy_fromiovecend()     (CVE-2018-16885)

  - Kernel: KVM: leak of uninitialized stack contents to     guest (CVE-2019-7222)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2019:2043 advisory.

    The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with     extremely high determinism requirements.

    Security Fix(es):

    * Kernel: vhost_net: infinite loop while receiving packets leads to DoS (CVE-2019-3900)

    * Kernel: page cache side channel attacks (CVE-2019-5489)

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

    * kernel: l2tp: Race condition between pppol2tp_session_create() and l2tp_eth_create() (CVE-2018-9517)

    * kernel: kvm: guest userspace to guest kernel write (CVE-2018-10853)

    * kernel: use-after-free Read in vhost_transport_send_pkt (CVE-2018-14625)

    * kernel: use-after-free in ucma_leave_multicast in drivers/infiniband/core/ucma.c (CVE-2018-14734)

    * kernel: Mishandling of indirect calls weakens Spectre mitigation for paravirtual guests (CVE-2018-15594)

    * kernel: TLB flush happens too late on mremap (CVE-2018-18281)

    * kernel: Heap address information leak while using L2CAP_GET_CONF_OPT (CVE-2019-3459)

    * kernel: Heap address information leak while using L2CAP_PARSE_CONF_RSP (CVE-2019-3460)

    * kernel: denial of service vector through vfio DMA mappings (CVE-2019-3882)

    * kernel: fix race condition between mmget_not_zero()/get_task_mm() and core dumping (CVE-2019-11599)

    * kernel: a NULL pointer dereference in drivers/scsi/megaraid/megaraid_sas_base.c leading to DoS     (CVE-2019-11810)

    * kernel: fs/ext4/extents.c leads to information disclosure (CVE-2019-11833)

    * kernel: Information exposure in fd_locked_ioctl function in drivers/block/floppy.c (CVE-2018-7755)

    * kernel: Memory leak in drivers/net/wireless/mac80211_hwsim.c:hwsim_new_radio_nl() can lead to potential     denial of service (CVE-2018-8087)

    * kernel: HID: debug: Buffer overflow in hid_debug_events_read() in drivers/hid/hid-debug.c     (CVE-2018-9516)

    * kernel: Integer overflow in the alarm_timer_nsleep function (CVE-2018-13053)

    * kernel: NULL pointer dereference in lookup_slow function (CVE-2018-13093)

    * kernel: NULL pointer dereference in xfs_da_shrink_inode function (CVE-2018-13094)

    * kernel: NULL pointer dereference in fs/xfs/libxfs/xfs_inode_buf.c (CVE-2018-13095)

    * kernel: Information leak in cdrom_ioctl_drive_status (CVE-2018-16658)

    * kernel: out-of-bound read in memcpy_fromiovecend() (CVE-2018-16885)

    * Kernel: KVM: leak of uninitialized stack contents to guest (CVE-2019-7222)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.7 Release Notes     linked from the References section.

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 Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2019:2029 advisory.

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

    Security Fix(es):

    * Kernel: vhost_net: infinite loop while receiving packets leads to DoS (CVE-2019-3900)

    * Kernel: page cache side channel attacks (CVE-2019-5489)

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

    * kernel: l2tp: Race condition between pppol2tp_session_create() and l2tp_eth_create() (CVE-2018-9517)

    * kernel: kvm: guest userspace to guest kernel write (CVE-2018-10853)

    * kernel: use-after-free Read in vhost_transport_send_pkt (CVE-2018-14625)

    * kernel: use-after-free in ucma_leave_multicast in drivers/infiniband/core/ucma.c (CVE-2018-14734)

    * kernel: Mishandling of indirect calls weakens Spectre mitigation for paravirtual guests (CVE-2018-15594)

    * kernel: TLB flush happens too late on mremap (CVE-2018-18281)

    * kernel: Heap address information leak while using L2CAP_GET_CONF_OPT (CVE-2019-3459)

    * kernel: Heap address information leak while using L2CAP_PARSE_CONF_RSP (CVE-2019-3460)

    * kernel: denial of service vector through vfio DMA mappings (CVE-2019-3882)

    * kernel: fix race condition between mmget_not_zero()/get_task_mm() and core dumping (CVE-2019-11599)

    * kernel: a NULL pointer dereference in drivers/scsi/megaraid/megaraid_sas_base.c leading to DoS     (CVE-2019-11810)

    * kernel: fs/ext4/extents.c leads to information disclosure (CVE-2019-11833)

    * kernel: Information exposure in fd_locked_ioctl function in drivers/block/floppy.c (CVE-2018-7755)

    * kernel: Memory leak in drivers/net/wireless/mac80211_hwsim.c:hwsim_new_radio_nl() can lead to potential     denial of service (CVE-2018-8087)

    * kernel: HID: debug: Buffer overflow in hid_debug_events_read() in drivers/hid/hid-debug.c     (CVE-2018-9516)

    * kernel: Integer overflow in the alarm_timer_nsleep function (CVE-2018-13053)

    * kernel: NULL pointer dereference in lookup_slow function (CVE-2018-13093)

    * kernel: NULL pointer dereference in xfs_da_shrink_inode function (CVE-2018-13094)

    * kernel: NULL pointer dereference in fs/xfs/libxfs/xfs_inode_buf.c (CVE-2018-13095)

    * kernel: Information leak in cdrom_ioctl_drive_status (CVE-2018-16658)

    * kernel: out-of-bound read in memcpy_fromiovecend() (CVE-2018-16885)

    * Kernel: KVM: leak of uninitialized stack contents to guest (CVE-2019-7222)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.7 Release Notes     linked from the References section.

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 Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2019:1350 advisory.

    The kernel-alt packages provide the Linux kernel version 4.x.

    Security Fix(es):

    * kernel: NULL pointer dereference in fs/xfs/libxfs/xfs_inode_buf.c (CVE-2018-13095)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Bug Fix(es):

    * [rhel-alt] Could not remove the function from /sys/kernel/debug/tracing/kprobe_events (BZ#1677171)

    * RHEL-ALT-7.6z: usage of stale vma in do_fault() can lead to a crash (BZ#1679243)

    * RHEL-Alt-7.6 - Backport support for software count cache flush Spectre v2 mitigation (BZ#1692682)

    * RHEL-Alt-7.6 - [LTC Test][SR-IOV]: Guest with VF pass-through crashes during reboot operation in a loop.
    (kvm) (libvirt/kernel) (BZ#1693146)

    * RHEL-Alt-7.6 - Tolerate new s390x crypto hardware for migration (BZ#1695643)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

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 :

  - A flaw was found in the USB-MIDI Linux kernel driver: a     double-free error could be triggered for the 'umidi'     object. An attacker with physical access to the system     could use this flaw to escalate their     privileges.(CVE-2016-2384i1/4%0

  - A vulnerability was found in Linux kernel. There is an     information leak in file 'sound/core/timer.c' of the     latest mainline Linux kernel, the stack object     aEURoetreadaEUR has a total size of 32 bytes. It contains a     8-bytes padding, which is not initialized but sent to     user via copy_to_user(), resulting a kernel     leak.(CVE-2016-4569i1/4%0

  - The dgram_recvmsg function in net/ieee802154/dgram.c in     the Linux kernel before 3.12.4 updates a certain length     value without ensuring that an associated data     structure has been initialized, which allows local     users to obtain sensitive information from kernel stack     memory via a (1) recvfrom, (2) recvmmsg, or (3) recvmsg     system call.(CVE-2013-7281i1/4%0

  - The tcp_v6_syn_recv_sock function in     net/ipv6/tcp_ipv6.c in the Linux kernel through 4.14.11     allows attackers to cause a denial of service (slab     out-of-bounds write) or possibly have unspecified other     impact via vectors involving TLS.(CVE-2018-5703i1/4%0

  - An issue was discovered in the fd_locked_ioctl function     in drivers/block/floppy.c in the Linux kernel. The     floppy driver will copy a kernel pointer to user memory     in response to the FDGETPRM ioctl. An attacker can send     the FDGETPRM ioctl and use the obtained kernel pointer     to discover the location of kernel code and data and     bypass kernel security protections such as     KASLR.(CVE-2018-7755i1/4%0

  - The usbnet_generic_cdc_bind function in     drivers/net/usb/cdc_ether.c in the Linux kernel through     4.13.11 allows local users to cause a denial of service     (divide-by-zero error and system crash) or possibly     have unspecified other impact via a crafted USB     device.(CVE-2017-16649i1/4%0

  - Heap-based buffer overflow in the wcnss_wlan_write     function in drivers/net/wireless/wcnss/wcnss_wlan.c in     the wcnss_wlan device driver for the Linux kernel 3.x,     as used in Qualcomm Innovation Center (QuIC) Android     contributions for MSM devices and other products,     allows attackers to cause a denial of service or     possibly have unspecified other impact by writing to     /dev/wcnss_wlan with an unexpected amount of     data.(CVE-2016-5342i1/4%0

  - drivers/media/usb/dvb-usb/dib0700_devices.c in the     Linux kernel through 4.13.11 allows local users to     cause a denial of service (BUG and system crash) or     possibly have unspecified other impact via a crafted     USB device.(CVE-2017-16646i1/4%0

  - A flaw was found in the TIPC networking subsystem which     could allow for memory corruption and possible     privilege escalation. The flaw involves a system with     an unusually low MTU (60) on networking devices     configured as bearers for the TIPC protocol. An     attacker could create a packet which will overwrite     memory outside of allocated space and allow for     privilege escalation.(CVE-2016-8632i1/4%0

  - An issue was discovered in the XFS filesystem in     fs/xfs/libxfs/xfs_inode_buf.c in the Linux kernel. A     denial of service due to the NULL pointer dereference     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.(CVE-2018-13095i1/4%0

  - Linux kernel built with the KVM visualization support     (CONFIG_KVM), with nested visualization (nVMX) feature     enabled (nested=1), is vulnerable to a crash due to     disabled external interrupts. As L2 guest could access     (r/w) hardware CR8 register of the host(L0). In a     nested visualization setup, L2 guest user could use     this flaw to potentially crash the host(L0) resulting     in DoS.(CVE-2017-12154i1/4%0

  - The do_double_fault function in arch/x86/kernel/traps.c     in the Linux kernel through 3.17.4 does not properly     handle faults associated with the Stack Segment (SS)     segment register, which allows local users to cause a     denial of service (panic) via a modify_ldt system call,     as demonstrated by sigreturn_32 in the     linux-clock-tests test suite.(CVE-2014-9090i1/4%0

  - A race condition flaw was found in the way the Linux     kernel's mac80211 subsystem implementation handled     synchronization between TX and STA wake-up code paths.
    A remote attacker could use this flaw to crash the     system.(CVE-2014-2706i1/4%0

  - The snd_seq_ioctl_remove_events function in     sound/core/seq/seq_clientmgr.c in the Linux kernel     before 4.4.1 does not verify FIFO assignment before     proceeding with FIFO clearing, which allows local users     to cause a denial of service (NULL pointer dereference     and OOPS) via a crafted ioctl call.(CVE-2016-2543i1/4%0

  - The gtco_probe function in drivers/input/tablet/gtco.c     in the Linux kernel through 4.5.2 allows physically     proximate attackers to cause a denial of service (NULL     pointer dereference and system crash) via a crafted     endpoints value in a USB device     descriptor.(CVE-2016-2187i1/4%0

  - An integer overflow flaw was found in the Linux     kernel's create_elf_tables() function. An unprivileged     local user with access to SUID (or otherwise     privileged) binary could use this flaw to escalate     their privileges on the system.(CVE-2018-14634i1/4%0

  - A use-after-free flaw was found in the Netlink     functionality of the Linux kernel networking subsystem.
    Due to the insufficient cleanup in the mq_notify     function, a local attacker could potentially use this     flaw to escalate their privileges on the     system.(CVE-2017-11176i1/4%0

  - Array index error in the aio_read_events_ring function     in fs/aio.c in the Linux kernel through 3.15.1 allows     local users to obtain sensitive information from kernel     memory via a large head value.(CVE-2014-0206i1/4%0

  - arch/arm/kernel/sys_oabi-compat.c in the Linux kernel     before 4.4 allows local users to gain privileges via a     crafted (1) F_OFD_GETLK, (2) F_OFD_SETLK, or (3)     F_OFD_SETLKW command in an fcntl64 system     call.(CVE-2015-8966i1/4%0

  - An issue was discovered in the Linux kernel through     4.17.2. The filter parsing in     kernel/trace/trace_events_filter.c could be called with     no filter, which is an N=0 case when it expected at     least one line to have been read, thus making the N-1     index invalid. This allows attackers to cause a denial     of service (slab out-of-bounds write) or possibly have     unspecified other impact via crafted perf_event_open     and mmap system calls.(CVE-2018-12714i1/4%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 v4.17.5 update contains important fixes across the tree

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

The SUSE Linux Enterprise 15 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

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-2018-14613: Prevent invalid pointer dereference in io_ctl_map_page() when mounting and operating a crafted btrfs image, caused by a lack of block group item validation in check_leaf_item (bsc#1102896).

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-2018-13093: 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-2018-13094: 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-2018-13095: 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-2018-12896: 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)

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 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 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.

ID	Name	Product	Family	Severity
180763	Oracle Linux 7 : kernel (ELSA-2019-2029)	Nessus	Oracle Linux Local Security Checks	high
164695	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-5.16.1)	Nessus	Misc.	critical
164602	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-5.11.3)	Nessus	Misc.	critical
164593	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-5.16.0.1)	Nessus	Misc.	critical
164561	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-5.17)	Nessus	Misc.	critical
153271	EulerOS 2.0 SP2 : kernel (EulerOS-SA-2021-2392)	Nessus	Huawei Local Security Checks	critical
148498	Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-4904-1)	Nessus	Ubuntu Local Security Checks	high
148493	Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-4907-1)	Nessus	Ubuntu Local Security Checks	high
128651	CentOS 7 : kernel (CESA-2019:2029)	Nessus	CentOS Local Security Checks	high
128226	Scientific Linux Security Update : kernel on SL7.x x86_64 (20190806)	Nessus	Scientific Linux Local Security Checks	high
127655	RHEL 7 : kernel-rt (RHSA-2019:2043)	Nessus	Red Hat Local Security Checks	high
127650	RHEL 7 : kernel (RHSA-2019:2029)	Nessus	Red Hat Local Security Checks	high
125713	RHEL 7 : kernel-alt (RHSA-2019:1350)	Nessus	Red Hat Local Security Checks	medium
125101	EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1513)	Nessus	Huawei Local Security Checks	critical
123329	openSUSE Security Update : the Linux Kernel (openSUSE-2019-769)	Nessus	SuSE Local Security Checks	high
120418	Fedora 28 : kernel (2018-50075276e8)	Nessus	Fedora Local Security Checks	high
120118	SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2018:2980-1)	Nessus	SuSE Local Security Checks	high
118034	SUSE SLES12 Security Update : kernel (SUSE-SU-2018:3084-1)	Nessus	SuSE Local Security Checks	high
117988	openSUSE Security Update : the Linux Kernel (openSUSE-2018-1140)	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
117523	openSUSE Security Update : the Linux Kernel (openSUSE-2018-1016)	Nessus	SuSE Local Security Checks	high
111243	Fedora 27 : kernel (2018-8484550fff)	Nessus	Fedora Local Security Checks	high

Detections

Analytics

CVE-2018-13095

medium

Tenable Plugins

high

critical

critical

critical

critical

critical

high

high

high

high

high

high

medium

critical

high

high

high

high

high

high

high

high

high