This update for the Linux Kernel 3.12.55-52_42 fixes several issues.
The following security bugs were fixed :

  - CVE-2016-4470: The key_reject_and_link function in     security/keys/key.c in the Linux kernel did not ensure     that a certain data structure is initialized, which     allowed local users to cause a denial of service (system     crash) via vectors involving a crafted keyctl request2     command (bsc#984764).

  - CVE-2016-1583: The ecryptfs_privileged_open function in     fs/ecryptfs/kthread.c in the Linux kernel allowed local     users to gain privileges or cause a denial of service     (stack memory consumption) via vectors involving crafted     mmap calls for /proc pathnames, leading to recursive     pagefault handling (bsc#983144).

  - CVE-2016-4565: The InfiniBand (aka IB) stack in the     Linux kernel incorrectly relied on the write system     call, which allowed local users to cause a denial of     service (kernel memory write operation) or possibly have     unspecified other impact via a uAPI interface     (bsc#980883).

  - CVE-2016-0758: Integer overflow in lib/asn1_decoder.c in     the Linux kernel allowed local users to gain privileges     via crafted ASN.1 data (bsc#980856).

  - CVE-2016-2053: The asn1_ber_decoder function in     lib/asn1_decoder.c in the Linux kernel allowed attackers     to cause a denial of service (panic) via an ASN.1 BER     file that lacks a public key, leading to mishandling by     the public_key_verify_signature function in     crypto/asymmetric_keys/public_key.c (bsc#979074).

  - CVE-2015-8816: The hub_activate function in     drivers/usb/core/hub.c in the Linux kernel did not     properly maintain a hub-interface data structure, which     allowed physically proximate attackers to cause a denial     of service (invalid memory access and system crash) or     possibly have unspecified other impact by unplugging a     USB hub device (bsc#979064).

  - CVE-2016-3134: The netfilter subsystem in the Linux     kernel did not validate certain offset fields, which     allowed local users to gain privileges or cause a denial     of service (heap memory corruption) via an     IPT_SO_SET_REPLACE setsockopt call (bsc#971793).

  - CVE-2013-7446: Use-after-free vulnerability in     net/unix/af_unix.c in the Linux kernel allowed local     users to bypass intended AF_UNIX socket permissions or     cause a denial of service (panic) via crafted epoll_ctl     calls (bsc#973570, bsc#955837).

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.

This update for the Linux Kernel 3.12.51-52_39 fixes several issues.
The following security bugs were fixed :

  - CVE-2016-4470: The key_reject_and_link function in     security/keys/key.c in the Linux kernel did not ensure     that a certain data structure is initialized, which     allowed local users to cause a denial of service (system     crash) via vectors involving a crafted keyctl request2     command (bsc#984764).

  - CVE-2016-1583: The ecryptfs_privileged_open function in     fs/ecryptfs/kthread.c in the Linux kernel allowed local     users to gain privileges or cause a denial of service     (stack memory consumption) via vectors involving crafted     mmap calls for /proc pathnames, leading to recursive     pagefault handling (bsc#983144).

  - CVE-2016-4565: The InfiniBand (aka IB) stack in the     Linux kernel incorrectly relied on the write system     call, which allowed local users to cause a denial of     service (kernel memory write operation) or possibly have     unspecified other impact via a uAPI interface     (bsc#980883).

  - CVE-2016-0758: Integer overflow in lib/asn1_decoder.c in     the Linux kernel allowed local users to gain privileges     via crafted ASN.1 data (bsc#980856).

  - CVE-2016-2053: The asn1_ber_decoder function in     lib/asn1_decoder.c in the Linux kernel allowed attackers     to cause a denial of service (panic) via an ASN.1 BER     file that lacks a public key, leading to mishandling by     the public_key_verify_signature function in     crypto/asymmetric_keys/public_key.c (bsc#979074).

  - CVE-2015-8816: The hub_activate function in     drivers/usb/core/hub.c in the Linux kernel did not     properly maintain a hub-interface data structure, which     allowed physically proximate attackers to cause a denial     of service (invalid memory access and system crash) or     possibly have unspecified other impact by unplugging a     USB hub device (bsc#979064).

  - CVE-2016-3134: The netfilter subsystem in the Linux     kernel did not validate certain offset fields, which     allowed local users to gain privileges or cause a denial     of service (heap memory corruption) via an     IPT_SO_SET_REPLACE setsockopt call (bsc#971793).

  - CVE-2013-7446: Use-after-free vulnerability in     net/unix/af_unix.c in the Linux kernel allowed local     users to bypass intended AF_UNIX socket permissions or     cause a denial of service (panic) via crafted epoll_ctl     calls (bsc#973570, bsc#955837).

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

The SUSE Linux Enterprise 12 SP1 kernel was updated to 3.12.62 to receive various security and bugfixes. The following security bugs were fixed :

  - CVE-2014-9904: The snd_compress_check_input function in     sound/core/compress_offload.c in the ALSA subsystem in     the Linux kernel did not properly check for an integer     overflow, which allowed local users to cause a denial of     service (insufficient memory allocation) or possibly     have unspecified other impact via a crafted     SNDRV_COMPRESS_SET_PARAMS ioctl call (bnc#986811).

  - CVE-2015-7833: The usbvision driver in the Linux kernel     allowed physically proximate attackers to cause a denial     of service (panic) via a nonzero bInterfaceNumber value     in a USB device descriptor (bnc#950998).

  - CVE-2015-8551: The PCI backend driver in Xen, when     running on an x86 system and using Linux as the driver     domain, allowed local guest administrators to hit BUG     conditions and cause a denial of service (NULL pointer     dereference and host OS crash) by leveraging a system     with access to a passed-through MSI or MSI-X capable     physical PCI device and a crafted sequence of     XEN_PCI_OP_* operations, aka 'Linux pciback missing     sanity checks (bnc#957990).

  - CVE-2015-8552: The PCI backend driver in Xen, when     running on an x86 system and using Linux as the driver     domain, allowed local guest administrators to generate a     continuous stream of WARN messages and cause a denial of     service (disk consumption) by leveraging a system with     access to a passed-through MSI or MSI-X capable physical     PCI device and XEN_PCI_OP_enable_msi operations, aka     'Linux pciback missing sanity checks (bnc#957990).

  - CVE-2015-8845: The tm_reclaim_thread function in     arch/powerpc/kernel/process.c in the Linux kernel on     powerpc platforms did not ensure that TM suspend mode     exists before proceeding with a tm_reclaim call, which     allowed local users to cause a denial of service (TM Bad     Thing exception and panic) via a crafted application     (bnc#975533).

  - CVE-2016-0758: Integer overflow in lib/asn1_decoder.c in     the Linux kernel allowed local users to gain privileges     via crafted ASN.1 data (bnc#979867).

  - CVE-2016-1583: The ecryptfs_privileged_open function in     fs/ecryptfs/kthread.c in the Linux kernel allowed local     users to gain privileges or cause a denial of service     (stack memory consumption) via vectors involving crafted     mmap calls for /proc pathnames, leading to recursive     pagefault handling (bsc#983143).

  - CVE-2016-2053: The asn1_ber_decoder function in     lib/asn1_decoder.c in the Linux kernel allowed attackers     to cause a denial of service (panic) via an ASN.1 BER     file that lacks a public key, leading to mishandling by     the public_key_verify_signature function in     crypto/asymmetric_keys/public_key.c (bnc#963762).

  - CVE-2016-3672: The arch_pick_mmap_layout function in     arch/x86/mm/mmap.c in the Linux kernel did not properly     randomize the legacy base address, which made it easier     for local users to defeat the intended restrictions on     the ADDR_NO_RANDOMIZE flag, and bypass the ASLR     protection mechanism for a setuid or setgid program, by     disabling stack-consumption resource limits     (bnc#974308).

  - CVE-2016-4470: The key_reject_and_link function in     security/keys/key.c in the Linux kernel did not ensure     that a certain data structure is initialized, which     allowed local users to cause a denial of service (system     crash) via vectors involving a crafted keyctl request2     command (bnc#984755).

  - CVE-2016-4482: The proc_connectinfo function in     drivers/usb/core/devio.c in the Linux kernel did not     initialize a certain data structure, which allowed local     users to obtain sensitive information from kernel stack     memory via a crafted USBDEVFS_CONNECTINFO ioctl call     (bsc#978401).

  - CVE-2016-4486: The rtnl_fill_link_ifmap function in     net/core/rtnetlink.c in the Linux kernel did not     initialize a certain data structure, which allowed local     users to obtain sensitive information from kernel stack     memory by reading a Netlink message (bnc#978822).

  - CVE-2016-4565: The InfiniBand (aka IB) stack in the     Linux kernel incorrectly relied on the write system     call, which allowed local users to cause a denial of     service (kernel memory write operation) or possibly have     unspecified other impact via a uAPI interface     (bnc#979548).

  - CVE-2016-4569: The snd_timer_user_params function in     sound/core/timer.c in the Linux kernel did not     initialize a certain data structure, which allowed local     users to obtain sensitive information from kernel stack     memory via crafted use of the ALSA timer interface     (bsc#979213).

  - CVE-2016-4578: sound/core/timer.c in the Linux kernel     did not initialize certain r1 data structures, which     allowed local users to obtain sensitive information from     kernel stack memory via crafted use of the ALSA timer     interface, related to the (1) snd_timer_user_ccallback     and (2) snd_timer_user_tinterrupt functions     (bnc#979879).

  - CVE-2016-4805: Use-after-free vulnerability in     drivers/net/ppp/ppp_generic.c in the Linux kernel     allowed local users to cause a denial of service (memory     corruption and system crash, or spinlock) or possibly     have unspecified other impact by removing a network     namespace, related to the ppp_register_net_channel and     ppp_unregister_channel functions (bnc#980371).

  - CVE-2016-4997: The compat IPT_SO_SET_REPLACE setsockopt     implementation in the netfilter subsystem in the Linux     kernel allowed local users to gain privileges or cause a     denial of service (memory corruption) by leveraging     in-container root access to provide a crafted offset     value that triggers an unintended decrement     (bsc#986362).

  - CVE-2016-4998: The IPT_SO_SET_REPLACE setsockopt     implementation in the netfilter subsystem in the Linux     kernel allowed local users to cause a denial of service     (out-of-bounds read) or possibly obtain sensitive     information from kernel heap memory by leveraging     in-container root access to provide a crafted offset     value that leads to crossing a ruleset blob boundary     (bsc#986365).

  - CVE-2016-5244: The rds_inc_info_copy function in     net/rds/recv.c in the Linux kernel did not initialize a     certain structure member, which allowed remote attackers     to obtain sensitive information from kernel stack memory     by reading an RDS message (bnc#983213).

  - CVE-2016-5828: The start_thread function in     arch/powerpc/kernel/process.c in the Linux kernel on     powerpc platforms mishandled transactional state, which     allowed local users to cause a denial of service     (invalid process state or TM Bad Thing exception, and     system crash) or possibly have unspecified other impact     by starting and suspending a transaction an exec system     call (bsc#986569).

  - CVE-2016-5829: Multiple heap-based buffer overflows in     the hiddev_ioctl_usage function in     drivers/hid/usbhid/hiddev.c in the Linux kernel allowed     local users to cause a denial of service or possibly     have unspecified other impact via a crafted (1)     HIDIOCGUSAGES or (2) HIDIOCSUSAGES ioctl call     (bnc#986572).

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.

Security Fix(es) :

  - A race condition was found in the way the Linux kernel's     memory subsystem handled the copy-on-write (COW)     breakage of private read-only memory mappings. An     unprivileged, local user could use this flaw to gain     write access to otherwise read-only memory mappings and     thus increase their privileges on the system.
    (CVE-2016-5195, Important)

  - It was found that stacking a file system over procfs in     the Linux kernel could lead to a kernel stack overflow     due to deep nesting, as demonstrated by mounting     ecryptfs over procfs and creating a recursion by mapping     /proc/environ. An unprivileged, local user could     potentially use this flaw to escalate their privileges     on the system. (CVE-2016-1583, Important)

Bug Fix(es) :

  - In some cases, a kernel crash or file system corruption     occurred when running journal mode 'ordered'. The kernel     crash was caused by a NULL pointer dereference due to a     race condition between two journal functions. The file     system corruption occurred due to a race condition     between the do_get_write_access() function and buffer     writeout. This update fixes both race conditions. As a     result, neither the kernel crash, nor the file system     corruption now occur.

  - Prior to this update, some Global File System 2 (GFS2)     files had incorrect time stamp values due to two     problems with handling time stamps of such files. The     first problem concerned the atime time stamp, which     ended up with an arbitrary value ahead of the actual     value, when a GFS2 file was accessed. The second problem     was related to the mtime and ctime time stamp updates,     which got lost when a GFS2 file was written to from one     node and read from or written to from another node. With     this update, a set of patches has been applied that fix     these problems. As a result, the time stamps of GFS2     files are now handled correctly.

According to the versions of the parallels-server-bm-release / vzkernel / etc packages installed, the Virtuozzo installation on the remote host is affected by the following vulnerabilities :

  - Stack overflow via ecryptfs and /proc/$pid/environ. It     was found that stacking a file system over procfs in     the Linux kernel could lead to a kernel stack overflow     due to deep nesting, as demonstrated by mounting     ecryptfs over procfs and creating a recursion by     mapping /proc/environ. An unprivileged, local user     could potentially use this flaw to escalate their     privileges on the system.

  - Use after free in tcp_xmit_retransmit_queue. A use     after free vulnerability was found in     tcp_xmit_retransmit_queue and other tcp_* functions.
    This condition could allow an attacker to send an     incorrect selective acknowledgment to existing     connections, possibly resetting a connection.

  - block: fix use-after-free in seq file. Use-after-free     vulnerability in the disk_seqf_stop function in     block/genhd.c in the Linux kernel before 4.7.1 allows     local users to gain privileges by leveraging the     execution of a certain stop operation even if the     corresponding start operation had failed.

  - block: fix use-after-free in sys_ioprio_get(). Race     condition in the get_task_ioprio function in     block/ioprio.c in the Linux kernel before 4.6.6 allows     local users to gain privileges or cause a denial of     service (use-after-free) via a crafted ioprio_get     system call.

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

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000970 advisory.

    The ecryptfs_privileged_open function in fs/ecryptfs/kthread.c in the Linux kernel before 4.6.3 allows     local users to gain privileges or cause a denial of service (stack memory consumption) via vectors     involving crafted mmap calls for /proc pathnames, leading to recursive pagefault handling.

Tenable has extracted the preceding description block directly from the Unity 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.

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

  - x86/iopl/64: properly context-switch IOPL on Xen PV     (Andy Lutomirski) [Orabug: 25269184] (CVE-2016-3157)

  - net: Fix use after free in the recvmmsg exit path     (Arnaldo Carvalho de Melo) [Orabug: 25298618]     (CVE-2016-7117)

  - logging errors that get masked to EIO inside     drivers/block/loop.c (Manjunath Patil) [Orabug:
    21962821]

  - sched/core: Clear the root_domain cpumasks in     init_rootdomain (Xunlei Pang) [Orabug: 23518650]

  - bio allocation failure due to bio_get_nr_vecs (Darrick     J. Wong) 

  - mlx4: avoid ABBA deadlock (Wengang Wang) [Orabug:
    23538548]

  - mlx4: avoid multiple free on id_map_ent (Wengang Wang)     [Orabug: 25022815]

  - sctp: validate chunk len before actually using it     (Marcelo Ricardo Leitner) [Orabug: 25142906]     (CVE-2016-9555)

  - NVMe: reduce queue depth as workaround for Samsung EPIC     SQ errata (Ashok Vairavan) [Orabug: 25138146]

  - RDS: Drop the connection as part of cancel to avoid     hangs (Avinash Repaka) [Orabug: 24951873]

  - aacraid: Check size values after double-fetch from user     (Dave Carroll) [Orabug: 25060055] (CVE-2016-6480)     (CVE-2016-6480)

  - audit: fix a double fetch in audit_log_single_execve_arg     (Paul Moore) [Orabug: 25059962] (CVE-2016-6136)

  - ecryptfs: don't allow mmap when the lower fs doesn't     support it (Jeff Mahoney) [Orabug: 24971918]     (CVE-2016-1583) (CVE-2016-1583)

  - ALSA: timer: Fix leak in events via     snd_timer_user_tinterrupt (Kangjie Lu) [Orabug:
    25059900] (CVE-2016-4578)

  - ALSA: timer: Fix leak in events via     snd_timer_user_ccallback (Kangjie Lu) [Orabug: 25059900]     (CVE-2016-4578)

  - ALSA: timer: Fix leak in SNDRV_TIMER_IOCTL_PARAMS     (Kangjie Lu) [Orabug: 25059755] (CVE-2016-4569)

  - Bluetooth: Fix potential NULL dereference in RFCOMM bind     callback (Jaganath Kanakkassery) [Orabug: 25058905]     (CVE-2015-8956)

  - mm: migrate dirty page without clear_page_dirty_for_io     etc (Hugh Dickins) [Orabug: 25059195] [CVE-2016-3070

The SUSE Linux Enterprise 12 SP1 kernel was updated to 3.12.59 to receive various security and bugfixes.

Main feature additions :

  - Improved support for Clustered File System (CephFS,     fate#318586).

  - Addition of kGraft patches now produces logging messages     to simplify auditing (fate#317827).

The following security bugs were fixed :

  - CVE-2016-1583: Prevent the usage of mmap when the lower     file system does not allow it. This could have lead to     local privilege escalation when ecryptfs-utils was     installed and /sbin/mount.ecryptfs_private was setuid     (bsc#983143).

  - CVE-2014-9717: fs/namespace.c in the Linux kernel     processes MNT_DETACH umount2 system calls without     verifying that the MNT_LOCKED flag is unset, which     allowed local users to bypass intended access     restrictions and navigate to filesystem locations     beneath a mount by calling umount2 within a user     namespace (bnc#928547).

  - CVE-2016-2185: The ati_remote2_probe function in     drivers/input/misc/ati_remote2.c in the Linux kernel     allowed 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     (bnc#971124).

  - CVE-2016-2186: The powermate_probe function in     drivers/input/misc/powermate.c in the Linux kernel     allowed 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     (bnc#970958).

  - CVE-2016-2188: The iowarrior_probe function in     drivers/usb/misc/iowarrior.c in the Linux kernel allowed     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     (bnc#970956).

  - CVE-2016-2847: fs/pipe.c in the Linux kernel did not     limit the amount of unread data in pipes, which allowed     local users to cause a denial of service (memory     consumption) by creating many pipes with non-default     sizes (bsc#970948).

  - CVE-2016-3134: The netfilter subsystem in the Linux     kernel did not validate certain offset fields, which     allowed local users to gain privileges or cause a denial     of service (heap memory corruption) via an     IPT_SO_SET_REPLACE setsockopt call (bnc#971126 971793).

  - CVE-2016-3136: The mct_u232_msr_to_state function in     drivers/usb/serial/mct_u232.c in the Linux kernel     allowed physically proximate attackers to cause a denial     of service (NULL pointer dereference and system crash)     via a crafted USB device without two interrupt-in     endpoint descriptors (bnc#970955).

  - CVE-2016-3137: drivers/usb/serial/cypress_m8.c in the     Linux kernel allowed physically proximate attackers to     cause a denial of service (NULL pointer dereference and     system crash) via a USB device without both an     interrupt-in and an interrupt-out endpoint descriptor,     related to the cypress_generic_port_probe and     cypress_open functions (bnc#970970).

  - CVE-2016-3138: The acm_probe function in     drivers/usb/class/cdc-acm.c in the Linux kernel allowed     physically proximate attackers to cause a denial of     service (NULL pointer dereference and system crash) via     a USB device without both a control and a data endpoint     descriptor (bnc#970911 970970).

  - CVE-2016-3140: The digi_port_init function in     drivers/usb/serial/digi_acceleport.c in the Linux kernel     allowed 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     (bnc#970892).

  - CVE-2016-3689: The ims_pcu_parse_cdc_data function in     drivers/input/misc/ims-pcu.c in the Linux kernel allowed     physically proximate attackers to cause a denial of     service (system crash) via a USB device without both a     master and a slave interface (bnc#971628).

  - CVE-2016-3951: Double free vulnerability in     drivers/net/usb/cdc_ncm.c in the Linux kernel allowed     physically proximate attackers to cause a denial of     service (system crash) or possibly have unspecified     other impact by inserting a USB device with an invalid     USB descriptor (bnc#974418).

  - CVE-2016-4482: Fixed information leak in devio     (bnc#978401).

  - CVE-2016-4486: Fixed information leak in rtnetlink (     bsc#978822).

  - CVE-2016-4569: Fixed information leak in events via     snd_timer_user_tinterrupt (bsc#979213).

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.

This update for the Linux Kernel 3.12.48-52_27 fixes several issues.
The following security bugs were fixed :

  - CVE-2016-4470: The key_reject_and_link function in     security/keys/key.c in the Linux kernel did not ensure     that a certain data structure is initialized, which     allowed local users to cause a denial of service (system     crash) via vectors involving a crafted keyctl request2     command (bsc#984764).

  - CVE-2016-1583: The ecryptfs_privileged_open function in     fs/ecryptfs/kthread.c in the Linux kernel allowed local     users to gain privileges or cause a denial of service     (stack memory consumption) via vectors involving crafted     mmap calls for /proc pathnames, leading to recursive     pagefault handling (bsc#983144).

  - CVE-2016-4565: The InfiniBand (aka IB) stack in the     Linux kernel incorrectly relied on the write system     call, which allowed local users to cause a denial of     service (kernel memory write operation) or possibly have     unspecified other impact via a uAPI interface     (bsc#980883).

  - CVE-2016-0758: Integer overflow in lib/asn1_decoder.c in     the Linux kernel allowed local users to gain privileges     via crafted ASN.1 data (bsc#980856).

  - CVE-2015-8019: The skb_copy_and_csum_datagram_iovec     function in net/core/datagram.c in the Linux kernel did     not accept a length argument, which allowed local users     to cause a denial of service (memory corruption) or     possibly have unspecified other impact via a write     system call followed by a recvmsg system call     (bsc#979078).

  - CVE-2016-2053: The asn1_ber_decoder function in     lib/asn1_decoder.c in the Linux kernel allowed attackers     to cause a denial of service (panic) via an ASN.1 BER     file that lacks a public key, leading to mishandling by     the public_key_verify_signature function in     crypto/asymmetric_keys/public_key.c (bsc#979074).

  - CVE-2015-8816: The hub_activate function in     drivers/usb/core/hub.c in the Linux kernel did not     properly maintain a hub-interface data structure, which     allowed physically proximate attackers to cause a denial     of service (invalid memory access and system crash) or     possibly have unspecified other impact by unplugging a     USB hub device (bsc#979064).

  - CVE-2016-3134: The netfilter subsystem in the Linux     kernel did not validate certain offset fields, which     allowed local users to gain privileges or cause a denial     of service (heap memory corruption) via an     IPT_SO_SET_REPLACE setsockopt call (bsc#971793).

  - CVE-2013-7446: Use-after-free vulnerability in     net/unix/af_unix.c in the Linux kernel allowed local     users to bypass intended AF_UNIX socket permissions or     cause a denial of service (panic) via crafted epoll_ctl     calls (bsc#973570, bsc#955837).

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.

An update for kernel is now available for Red Hat Enterprise Linux 5.

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) :

* A race condition was found in the way the Linux kernel's memory subsystem handled the copy-on-write (COW) breakage of private read-only memory mappings. An unprivileged, local user could use this flaw to gain write access to otherwise read-only memory mappings and thus increase their privileges on the system. (CVE-2016-5195, Important)

* It was found that stacking a file system over procfs in the Linux kernel could lead to a kernel stack overflow due to deep nesting, as demonstrated by mounting ecryptfs over procfs and creating a recursion by mapping /proc/environ. An unprivileged, local user could potentially use this flaw to escalate their privileges on the system.
(CVE-2016-1583, Important)

Red Hat would like to thank Phil Oester for reporting CVE-2016-5195.

Bug Fix(es) :

* In some cases, a kernel crash or file system corruption occurred when running journal mode 'ordered'. The kernel crash was caused by a NULL pointer dereference due to a race condition between two journal functions. The file system corruption occurred due to a race condition between the do_get_write_access() function and buffer writeout. This update fixes both race conditions. As a result, neither the kernel crash, nor the file system corruption now occur. (BZ#1067708)

* Prior to this update, some Global File System 2 (GFS2) files had incorrect time stamp values due to two problems with handling time stamps of such files. The first problem concerned the atime time stamp, which ended up with an arbitrary value ahead of the actual value, when a GFS2 file was accessed. The second problem was related to the mtime and ctime time stamp updates, which got lost when a GFS2 file was written to from one node and read from or written to from another node. With this update, a set of patches has been applied that fix these problems. As a result, the time stamps of GFS2 files are now handled correctly. (BZ#1374861)

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

  - Array index error in the tcm_vhost_make_tpg function in     drivers/vhost/scsi.c in the Linux kernel before 4.0     might allow guest OS users to cause a denial of service     (memory corruption) or possibly have unspecified other     impact via a crafted VHOST_SCSI_SET_ENDPOINT ioctl     call. NOTE: the affected function was renamed to     vhost_scsi_make_tpg before the vulnerability was     announced.(CVE-2015-4036)

  - The ecryptfs_privileged_open function in     fs/ecryptfs/kthread.c in the Linux kernel before 4.6.3     allows local users to gain privileges or cause a denial     of service (stack memory consumption) via vectors     involving crafted mmap calls for /proc pathnames,     leading to recursive pagefault handling.(CVE-2016-1583)

  - It was found that SCSI driver in the Linux kernel can     improperly access userspace memory outside the provided     buffer. A local privileged attacker could potentially     use this flaw to expose information from the kernel     memory.(CVE-2017-13168)

  - The acpi_ds_create_operands() function in     drivers/acpi/acpica/dsutils.c in the Linux kernel     through 4.12.9 does not flush the operand cache and     causes a kernel stack dump, which allows local users to     obtain sensitive information from kernel memory and     bypass the KASLR protection mechanism (in the kernel     through 4.9) via a crafted ACPI table.(CVE-2017-13693)

  - The acpi_ps_complete_final_op() function in     drivers/acpi/acpica/psobject.c in the Linux kernel     through 4.12.9 does not flush the node and node_ext     caches and causes a kernel stack dump, which allows     local users to obtain sensitive information from kernel     memory and bypass the KASLR protection mechanism (in     the kernel through 4.9) via a crafted ACPI     table.(CVE-2017-13694)

  - The acpi_ns_evaluate() function in     drivers/acpi/acpica/nseval.c in the Linux kernel     through 4.12.9 does not flush the operand cache and     causes a kernel stack dump, which allows local users to     obtain sensitive information from kernel memory and     bypass the KASLR protection mechanism (in the kernel     through 4.9) via a crafted ACPI table.(CVE-2017-13695)

  - The XFS_IS_REALTIME_INODE macro in fs/xfs/xfs_linux.h     in the Linux kernel before 4.13.2 does not verify that     a filesystem has a realtime device, which allows local     users to cause a denial of service (NULL pointer     dereference and OOPS) via vectors related to setting an     RHINHERIT flag on a directory.(CVE-2017-14340)

  - The xfs_bmap_extents_to_btree function in     fs/xfs/libxfs/xfs_bmap.c in the Linux kernel through     4.16.3 allows local users to cause a denial of service     (xfs_bmapi_write NULL pointer dereference) via a     crafted xfs image.(CVE-2018-10323)

  - 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.(CVE-2018-10876)

  - A flaw was found in the Linux kernel ext4 filesystem.
    An out-of-bound access is possible in the     ext4_ext_drop_refs() function when operating on a     crafted ext4 filesystem image.(CVE-2018-10877)

  - The pcpu_embed_first_chunk function in mm/percpu.c in     the Linux kernel through 4.14.14 allows local users to     obtain sensitive address information by reading dmesg     data from a(CVE-2018-5995)

  - Memory leak in the irda_bind function in     net/irda/af_irda.c and later in     drivers/staging/irda/net/af_irda.c in the Linux kernel     before 4.17 allows local users to cause a denial of     service (memory consumption) by repeatedly binding an     AF_IRDA socket.(CVE-2018-6554)

  - A NULL pointer dereference was found in the     net/rds/rdma.c __rds_rdma_map() function in the Linux     kernel before 4.14.7 allowing local attackers to cause     a system panic and a denial-of-service, related to     RDS_GET_MR and RDS_GET_MR_FOR_DEST.(CVE-2018-7492)

  - ** DISPUTED ** Race condition in the     store_int_with_restart() function in     arch/x86/kernel/cpu/mcheck/mce.c in the Linux kernel     through 4.15.7 allows local users to cause a denial of     service (panic) by leveraging root access to write to     the check_interval file in a     /sys/devices/system/machinecheck/machinecheck<cpu     number> directory. NOTE: a third party has indicated     that this report is not security     relevant.(CVE-2018-7995)

  - Non-optimized code for key handling of shared futexes     was found in the Linux kernel in the form of unbounded     contention time due to the page lock for real-time     users. Before the fix, the page lock was an     unnecessarily heavy lock for the futex path that     protected too much. After the fix, the page lock is     only required in a specific corner case.(CVE-2018-9422)

  - A memory leak in the ccp_run_sha_cmd() function in     drivers/crypto/ccp/ccp-ops.c in the Linux kernel     through 5.3.9 allows attackers to cause a denial of     service (memory consumption), aka     CID-128c66429247.(CVE-2019-18808)

  - In the Linux kernel before 5.1, there is a memory leak     in __feat_register_sp() in net/dccp/feat.c, which may     cause denial of service, aka     CID-1d3ff0950e2b.(CVE-2019-20096)

  - An issue was discovered in the Linux kernel before     5.4.7. The prb_calc_retire_blk_tmo() function in     net/packet/af_packet.c can result in a denial of     service (CPU consumption and soft lockup) in a certain     failure case involving TPACKET_V3, aka     CID-b43d1f9f7067.(CVE-2019-20812)

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.

ID	Name	Product	Family	Published	Updated	Severity
93278	SUSE SLES12 Security Update : kernel (SUSE-SU-2016:2006-1)	Nessus	SuSE Local Security Checks	9/2/2016	1/27/2026	high
93280	SUSE SLES12 Security Update : kernel (SUSE-SU-2016:2010-1)	Nessus	SuSE Local Security Checks	9/2/2016	1/27/2026	high
93299	SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2016:2105-1)	Nessus	SuSE Local Security Checks	9/2/2016	1/27/2026	high
94432	Scientific Linux Security Update : kernel on SL5.x i386/x86_64 (20161028) (Dirty COW)	Nessus	Scientific Linux Local Security Checks	10/31/2016	1/20/2026	high
121162	Virtuozzo 6 : parallels-server-bm-release / vzkernel / etc (VZA-2016-104)	Nessus	Virtuozzo Local Security Checks	1/14/2019	6/26/2024	high
291071	Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000970)	Nessus	Unity Linux Local Security Checks	1/16/2026	1/16/2026	high
96073	OracleVM 3.2 : Unbreakable / etc (OVMSA-2016-0181)	Nessus	OracleVM Local Security Checks	12/22/2016	1/7/2026	critical
93168	SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2016:1696-1)	Nessus	SuSE Local Security Checks	8/29/2016	1/27/2026	high
92007	openSUSE Security Update : the Linux Kernel (openSUSE-2016-862)	Nessus	SuSE Local Security Checks	7/12/2016	1/19/2021	high
93277	SUSE SLES12 Security Update : kernel (SUSE-SU-2016:2005-1)	Nessus	SuSE Local Security Checks	9/2/2016	1/27/2026	high
94409	CentOS 5 : kernel (CESA-2016:2124) (Dirty COW)	Nessus	CentOS Local Security Checks	10/31/2016	1/20/2026	high
141697	EulerOS Virtualization 3.0.2.2 : kernel (EulerOS-SA-2020-2222)	Nessus	Huawei Local Security Checks	10/21/2020	1/6/2021	high

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