Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service, information leak or privilege escalation. The Common Vulnerabilities and Exposures project identifies the following problems :

  - CVE-2013-0160     vladz reported a timing leak with the /dev/ptmx     character device. A local user could use this to     determine sensitive information such as password length.

  - CVE-2013-1796     Andrew Honig of Google reported an issue in the KVM     subsystem. A user in a guest operating system could     corrupt kernel memory, resulting in a denial of service.

  - CVE-2013-1929     Oded Horovitz and Brad Spengler reported an issue in the     device driver for Broadcom Tigon3 based gigabit     Ethernet. Users with the ability to attach untrusted     devices can create an overflow condition, resulting in a     denial of service or elevated privileges.

  - CVE-2013-1979     Andy Lutomirski reported an issue in the socket level     control message processing subsystem. Local users may be     able to gain eleveated privileges.

  - CVE-2013-2015     Theodore Ts'o provided a fix for an issue in the ext4     filesystem. Local users with the ability to mount a     specially crafted filesystem can cause a denial of     service (infinite loop).

  - CVE-2013-2094     Tommie Rantala discovered an issue in the perf     subsystem. An out-of-bounds access vulnerability allows     local users to gain elevated privileges.

  - CVE-2013-3076     Mathias Krause discovered an issue in the userspace     interface for hash algorithms. Local users can gain     access to sensitive kernel memory.

  - CVE-2013-3222     Mathias Krause discovered an issue in the Asynchronous     Transfer Mode (ATM) protocol support. Local users can     gain access to sensitive kernel memory.

  - CVE-2013-3223     Mathias Krause discovered an issue in the Amateur Radio     AX.25 protocol support. Local users can gain access to     sensitive kernel memory.

  - CVE-2013-3224     Mathias Krause discovered an issue in the Bluetooth     subsystem. Local users can gain access to sensitive     kernel memory.

  - CVE-2013-3225     Mathias Krause discovered an issue in the Bluetooth     RFCOMM protocol support. Local users can gain access to     sensitive kernel memory.

  - CVE-2013-3227     Mathias Krause discovered an issue in the Communication     CPU to Application CPU Interface (CAIF). Local users can     gain access to sensitive kernel memory.

  - CVE-2013-3228     Mathias Krause discovered an issue in the IrDA     (infrared) subsystem support. Local users can gain     access to sensitive kernel memory.

  - CVE-2013-3229     Mathias Krause discovered an issue in the IUCV support     on s390 systems. Local users can gain access to     sensitive kernel memory.

  - CVE-2013-3231     Mathias Krause discovered an issue in the ANSI/IEEE     802.2 LLC type 2 protocol support. Local users can gain     access to sensitive kernel memory.

  - CVE-2013-3234     Mathias Krause discovered an issue in the Amateur Radio     X.25 PLP (Rose) protocol support. Local users can gain     access to sensitive kernel memory.

  - CVE-2013-3235     Mathias Krause discovered an issue in the Transparent     Inter Process Communication (TIPC) protocol support.
    Local users can gain access to sensitive kernel memory.

  - CVE-2013-3301     Namhyung Kim reported an issue in the tracing subsystem.
    A privileged local user could cause a denial of service     (system crash). This vulnerabililty is not applicable to     Debian systems by default.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000721 advisory.

    The ext4_orphan_del function in fs/ext4/namei.c in the Linux kernel before 3.7.3 does not properly handle     orphan-list entries for non-journal filesystems, which allows physically proximate attackers to cause a     denial of service (system hang) via a crafted filesystem on removable media, as demonstrated by the     e2fsprogs tests/f_orphan_extents_inode/image.gz test.

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 SUSE Linux Enterprise 11 SP2 kernel was updated to receive various security and bug fixes. The following security bugs were fixed :

  - CVE-2016-4486: Fixed 4 byte information leak in     net/core/rtnetlink.c (bsc#978822).

  - 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).

  - 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 (bnc#970948).

  - 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-2016-3138: 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).

  - 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-2016-3140: 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-2016-2186: 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-2016-2185: 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-2016-3156: The IPv4 implementation in the Linux     kernel mishandles destruction of device objects, which     allowed guest OS users to cause a denial of service     (host OS networking outage) by arranging for a large     number of IP addresses (bnc#971360).

  - CVE-2016-2184: The create_fixed_stream_quirk function in     sound/usb/quirks.c in the snd-usb-audio driver in the     Linux kernel allowed physically proximate attackers to     cause a denial of service (NULL pointer dereference or     double free, and system crash) via a crafted endpoints     value in a USB device descriptor (bnc#971125).

  - CVE-2016-3139: The wacom_probe function in     drivers/input/tablet/wacom_sys.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#970909).

  - CVE-2016-2143: The fork implementation in the Linux     kernel on s390 platforms mishandled the case of four     page-table levels, which allowed local users to cause a     denial of service (system crash) or possibly have     unspecified other impact via a crafted application,     related to arch/s390/include/asm/mmu_context.h and     arch/s390/include/asm/pgalloc.h (bnc#970504).

  - CVE-2016-2782: The treo_attach function in     drivers/usb/serial/visor.c in the Linux kernel allowed     physically proximate attackers to cause a denial of     service (NULL pointer dereference and system crash) or     possibly have unspecified other impact by inserting a     USB device that lacks a (1) bulk-in or (2) interrupt-in     endpoint (bnc#968670).

  - 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 (bnc#968010).

  - CVE-2015-7566: The clie_5_attach function in     drivers/usb/serial/visor.c in the Linux kernel allowed     physically proximate attackers to cause a denial of     service (NULL pointer dereference and system crash) or     possibly have unspecified other impact by inserting a     USB device that lacks a bulk-out endpoint (bnc#961512).

  - CVE-2016-2549: sound/core/hrtimer.c in the Linux kernel     did not prevent recursive callback access, which allowed     local users to cause a denial of service (deadlock) via     a crafted ioctl call (bnc#968013).

  - CVE-2016-2547: sound/core/timer.c in the Linux kernel     employed a locking approach that did not consider slave     timer instances, which allowed local users to cause a     denial of service (race condition, use-after-free, and     system crash) via a crafted ioctl call (bnc#968011).

  - CVE-2016-2548: sound/core/timer.c in the Linux kernel     retained certain linked lists after a close or stop     action, which allowed local users to cause a denial of     service (system crash) via a crafted ioctl call, related     to the (1) snd_timer_close and (2) _snd_timer_stop     functions (bnc#968012).

  - CVE-2016-2546: sound/core/timer.c in the Linux kernel     used an incorrect type of mutex, which allowed local     users to cause a denial of service (race condition,     use-after-free, and system crash) via a crafted ioctl     call (bnc#967975).

  - CVE-2016-2545: The snd_timer_interrupt function in     sound/core/timer.c in the Linux kernel did not properly     maintain a certain linked list, which allowed local     users to cause a denial of service (race condition and     system crash) via a crafted ioctl call (bnc#967974).

  - CVE-2016-2544: Race condition in the queue_delete     function in sound/core/seq/seq_queue.c in the Linux     kernel allowed local users to cause a denial of service     (use-after-free and system crash) by making an ioctl     call at a certain time (bnc#967973).

  - CVE-2016-2543: The snd_seq_ioctl_remove_events function     in sound/core/seq/seq_clientmgr.c in the Linux kernel     did not verify FIFO assignment before proceeding with     FIFO clearing, which allowed local users to cause a     denial of service (NULL pointer dereference and OOPS)     via a crafted ioctl call (bnc#967972).

  - CVE-2016-2384: Double free vulnerability in the     snd_usbmidi_create function in sound/usb/midi.c in the     Linux kernel allowed physically proximate attackers to     cause a denial of service (panic) or possibly have     unspecified other impact via vectors involving an     invalid USB descriptor (bnc#966693).

  - CVE-2015-8812: drivers/infiniband/hw/cxgb3/iwch_cm.c in     the Linux kernel did not properly identify error     conditions, which allowed remote attackers to execute     arbitrary code or cause a denial of service     (use-after-free) via crafted packets (bnc#966437).

  - CVE-2015-8785: The fuse_fill_write_pages function in     fs/fuse/file.c in the Linux kernel allowed local users     to cause a denial of service (infinite loop) via a     writev system call that triggers a zero length for the     first segment of an iov (bnc#963765).

  - CVE-2016-2069: Race condition in arch/x86/mm/tlb.c in     the Linux kernel .4.1 allowed local users to gain     privileges by triggering access to a paging structure by     a different CPU (bnc#963767).

  - CVE-2016-0723: Race condition in the tty_ioctl function     in drivers/tty/tty_io.c in the Linux kernel allowed     local users to obtain sensitive information from kernel     memory or cause a denial of service (use-after-free and     system crash) by making a TIOCGETD ioctl call during     processing of a TIOCSETD ioctl call (bnc#961500).

  - 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 (bnc#955654).

  - CVE-2015-8767: net/sctp/sm_sideeffect.c in the Linux     kernel did not properly manage the relationship between     a lock and a socket, which allowed local users to cause     a denial of service (deadlock) via a crafted sctp_accept     call (bnc#961509).

  - CVE-2015-7515: The aiptek_probe function in     drivers/input/tablet/aiptek.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 that lacks endpoints     (bnc#956708).

  - CVE-2015-8215: net/ipv6/addrconf.c in the IPv6 stack in     the Linux kernel did not validate attempted changes to     the MTU value, which allowed context-dependent attackers     to cause a denial of service (packet loss) via a value     that is (1) smaller than the minimum compliant value or     (2) larger than the MTU of an interface, as demonstrated     by a Router Advertisement (RA) message that is not     validated by a daemon, a different vulnerability than     CVE-2015-0272 (bnc#955354).

  - CVE-2015-7550: The keyctl_read_key function in     security/keys/keyctl.c in the Linux kernel did not     properly use a semaphore, which allowed local users to     cause a denial of service (NULL pointer dereference and     system crash) or possibly have unspecified other impact     via a crafted application that leverages a race     condition between keyctl_revoke and keyctl_read calls     (bnc#958951).

  - CVE-2015-8569: The (1) pptp_bind and (2) pptp_connect     functions in drivers/net/ppp/pptp.c in the Linux kernel     did not verify an address length, which allowed local     users to obtain sensitive information from kernel memory     and bypass the KASLR protection mechanism via a crafted     application (bnc#959190).

  - CVE-2015-8575: The sco_sock_bind function in     net/bluetooth/sco.c in the Linux kernel did not verify     an address length, which allowed local users to obtain     sensitive information from kernel memory and bypass the     KASLR protection mechanism via a crafted application     (bnc#959399).

  - CVE-2015-8543: The networking implementation in the     Linux kernel did not validate protocol identifiers for     certain protocol families, which allowed local users to     cause a denial of service (NULL function pointer     dereference and system crash) or possibly gain     privileges by leveraging CLONE_NEWUSER support to     execute a crafted SOCK_RAW application (bnc#958886).

  - CVE-2015-8539: The KEYS subsystem in the Linux kernel     allowed local users to gain privileges or cause a denial     of service (BUG) via crafted keyctl commands that     negatively instantiate a key, related to     security/keys/encrypted-keys/encrypted.c,     security/keys/trusted.c, and     security/keys/user_defined.c (bnc#958463).

  - CVE-2015-7509: fs/ext4/namei.c in the Linux kernel     allowed physically proximate attackers to cause a denial     of service (system crash) via a crafted no-journal     filesystem, a related issue to CVE-2013-2015     (bnc#956709).

  - CVE-2015-7799: The slhc_init function in     drivers/net/slip/slhc.c in the Linux kernel did not     ensure that certain slot numbers are valid, which     allowed local users to cause a denial of service (NULL     pointer dereference and system crash) via a crafted     PPPIOCSMAXCID ioctl call (bnc#949936).

  - CVE-2015-8104: The KVM subsystem in the Linux kernel     allowed guest OS users to cause a denial of service     (host OS panic or hang) by triggering many #DB (aka     Debug) exceptions, related to svm.c (bnc#954404).

  - CVE-2015-5307: The KVM subsystem in the Linux kernel     allowed guest OS users to cause a denial of service     (host OS panic or hang) by triggering many #AC (aka     Alignment Check) exceptions, related to svm.c and vmx.c     (bnc#953527).

  - CVE-2015-7990: Race condition in the rds_sendmsg     function in net/rds/sendmsg.c in the Linux kernel     allowed local users to cause a denial of service (NULL     pointer dereference and system crash) or possibly have     unspecified other impact by using a socket that was not     properly bound (bnc#952384).

  - CVE-2015-7872: The key_gc_unused_keys function in     security/keys/gc.c in the Linux kernel allowed local     users to cause a denial of service (OOPS) via crafted     keyctl commands (bnc#951440).

  - CVE-2015-6937: The __rds_conn_create function in     net/rds/connection.c in the Linux kernel allowed local     users to cause a denial of service (NULL pointer     dereference and system crash) or possibly have     unspecified other impact by using a socket that was not     properly bound (bnc#945825).

  - CVE-2015-6252: The vhost_dev_ioctl function in     drivers/vhost/vhost.c in the Linux kernel allowed local     users to cause a denial of service (memory consumption)     via a VHOST_SET_LOG_FD ioctl call that triggers     permanent file-descriptor allocation (bnc#942367).

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

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.

Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service, information leak or privilege escalation. The Common Vulnerabilities and Exposures project identifies the following problems :

  - CVE-2012-2121     Benjamin Herrenschmidt and Jason Baron discovered issues     with the IOMMU mapping of memory slots used in KVM     device assignment. Local users with the ability to     assign devices could cause a denial of service due to a     memory page leak.

  - CVE-2012-3552     Hafid Lin reported an issue in the IP networking     subsystem. A remote user can cause a denial of service     (system crash) on servers running applications that set     options on sockets which are actively being processed.

  - CVE-2012-4461     Jon Howell reported a denial of service issue in the KVM     subsystem. On systems that do not support the XSAVE     feature, local users with access to the /dev/kvm     interface can cause a system crash.

  - CVE-2012-4508     Dmitry Monakhov and Theodore Ts'o reported a race     condition in the ext4 filesystem. Local users could gain     access to sensitive kernel memory.

  - CVE-2012-6537     Mathias Krause discovered information leak issues in the     Transformation user configuration interface. Local users     with the CAP_NET_ADMIN capability can gain access to     sensitive kernel memory.

  - CVE-2012-6539     Mathias Krause discovered an issue in the networking     subsystem. Local users on 64-bit systems can gain access     to sensitive kernel memory.

  - CVE-2012-6540     Mathias Krause discovered an issue in the Linux virtual     server subsystem. Local users can gain access to     sensitive kernel memory. Note: this issue does not     affect Debian provided kernels, but may affect custom     kernels built from Debian's linux-source-2.6.32 package.

  - CVE-2012-6542     Mathias Krause discovered an issue in the LLC protocol     support code. Local users can gain access to sensitive     kernel memory.

  - CVE-2012-6544     Mathias Krause discovered issues in the Bluetooth     subsystem. Local users can gain access to sensitive     kernel memory.

  - CVE-2012-6545     Mathias Krause discovered issues in the Bluetooth RFCOMM     protocol support. Local users can gain access to     sensitive kernel memory.

  - CVE-2012-6546     Mathias Krause discovered issues in the ATM networking     support. Local users can gain access to sensitive kernel     memory.

  - CVE-2012-6548     Mathias Krause discovered an issue in the UDF file     system support. Local users can obtain access to     sensitive kernel memory.

  - CVE-2012-6549     Mathias Krause discovered an issue in the isofs file     system support. Local users can obtain access to     sensitive kernel memory.

  - CVE-2013-0349     Anderson Lizardo discovered an issue in the Bluetooth     Human Interface Device Protocol (HIDP) stack. Local     users can obtain access to sensitive kernel memory.

  - CVE-2013-0914     Emese Revfy discovered an issue in the signal     implementation. Local users may be able to bypass the     address space layout randomization (ASLR) facility due     to a leaking of information to child processes.

  - CVE-2013-1767     Greg Thelen reported an issue in the tmpfs virtual     memory filesystem. Local users with sufficient privilege     to mount filesystems can cause a denial of service or     possibly elevated privileges due to a use-after free     defect.

  - CVE-2013-1773     Alan Stern provided a fix for a defect in the     UTF8->UTF16 string conversion facility used by the VFAT     filesystem. A local user could cause a buffer overflow     condition, resulting in a denial of service or     potentially elevated privileges.

  - CVE-2013-1774     Wolfgang Frisch provided a fix for a NULL pointer     dereference defect in the driver for some serial USB     devices from Inside Out Networks. Local users with     permission to access these devices can create a denial     of service (kernel oops) by causing the device to be     removed while it is in use.

  - CVE-2013-1792     Mateusz Guzik of Red Hat EMEA GSS SEG Team discovered a     race condition in the access key retention support in     the kernel. A local user could cause a denial of service     (NULL pointer dereference).

  - CVE-2013-1796     Andrew Honig of Google reported an issue in the KVM     subsystem. A user in a guest operating system could     corrupt kernel memory, resulting in a denial of service.

  - CVE-2013-1798     Andrew Honig of Google reported an issue in the KVM     subsystem. A user in a guest operating system could     cause a denial of service due to a use after-free     defect.

  - CVE-2013-1826     Mathias Krause discovered an issue in the Transformation     (XFRM) user configuration interface of the networking     stack. A user with the CAP_NET_ADMIN capability may be     able to gain elevated privileges.

  - CVE-2013-1860     Oliver Neukum discovered an issue in the USB CDC WCM     Device Management driver. Local users with the ability     to attach devices can cause a denial of service (kernel     crash) or potentially gain elevated privileges.

  - CVE-2013-1928     Kees Cook provided a fix for an information leak in the     VIDEO_SET_SPU_PALETTE ioctl for 32-bit applications     running on a 64-bit kernel. Local users can gain access     to sensitive kernel memory.

  - CVE-2013-1929     Oded Horovitz and Brad Spengler reported an issue in the     device driver for Broadcom Tigon3 based gigabit     Ethernet. Users with the ability to attach untrusted     devices can create an overflow condition, resulting in a     denial of service or elevated privileges.

  - CVE-2013-2015     Theodore Ts'o provided a fix for an issue in the ext4     filesystem. Local users with the ability to mount a     specially crafted filesystem can cause a denial of     service (infinite loop).

  - CVE-2013-2634     Mathias Krause discovered a few issues in the Data     Center Bridging (DCB) netlink interface. Local users can     gain access to sensitive kernel memory.

  - CVE-2013-3222     Mathias Krause discovered an issue in the Asynchronous     Transfer Mode (ATM) protocol support. Local users can     gain access to sensitive kernel memory.

  - CVE-2013-3223     Mathias Krause discovered an issue in the Amateur Radio     AX.25 protocol support. Local users can gain access to     sensitive kernel memory.

  - CVE-2013-3224     Mathias Krause discovered an issue in the Bluetooth     subsystem. Local users can gain access to sensitive     kernel memory.

  - CVE-2013-3225     Mathias Krause discovered an issue in the Bluetooth     RFCOMM protocol support. Local users can gain access to     sensitive kernel memory.

  - CVE-2013-3228     Mathias Krause discovered an issue in the IrDA     (infrared) subsystem support. Local users can gain     access to sensitive kernel memory.

  - CVE-2013-3229     Mathias Krause discovered an issue in the IUCV support     on s390 systems. Local users can gain access to     sensitive kernel memory.

  - CVE-2013-3231     Mathias Krause discovered an issue in the ANSI/IEEE     802.2 LLC type 2 protocol support. Local users can gain     access to sensitive kernel memory.

  - CVE-2013-3234     Mathias Krause discovered an issue in the Amateur Radio     X.25 PLP (Rose) protocol support. Local users can gain     access to sensitive kernel memory.

  - CVE-2013-3235     Mathias Krause discovered an issue in the Transparent     Inter Process Communication (TIPC) protocol support.
    Local users can gain access to sensitive kernel memory.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001973 advisory.

    The ext4_orphan_del function in fs/ext4/namei.c in the Linux kernel before 3.7.3 does not properly handle     orphan-list entries for non-journal filesystems, which allows physically proximate attackers to cause a     denial of service (system hang) via a crafted filesystem on removable media, as demonstrated by the     e2fsprogs tests/f_orphan_extents_inode/image.gz test.

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 Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002379 advisory.

    The ext4_orphan_del function in fs/ext4/namei.c in the Linux kernel before 3.7.3 does not properly handle     orphan-list entries for non-journal filesystems, which allows physically proximate attackers to cause a     denial of service (system hang) via a crafted filesystem on removable media, as demonstrated by the     e2fsprogs tests/f_orphan_extents_inode/image.gz test.

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.

Multiple vulnerabilities has been found and corrected in the Linux kernel :

The ipc_rcu_putref function in ipc/util.c in the Linux kernel before 3.10 does not properly manage a reference count, which allows local users to cause a denial of service (memory consumption or system crash) via a crafted application (CVE-2013-4483).

The skb_flow_dissect function in net/core/flow_dissector.c in the Linux kernel through 3.12 allows remote attackers to cause a denial of service (infinite loop) via a small value in the IHL field of a packet with IPIP encapsulation (CVE-2013-4348).

The Linux kernel before 3.12, when UDP Fragmentation Offload (UFO) is enabled, does not properly initialize certain data structures, which allows local users to cause a denial of service (memory corruption and system crash) or possibly gain privileges via a crafted application that uses the UDP_CORK option in a setsockopt system call and sends both short and long packets, related to the ip_ufo_append_data function in net/ipv4/ip_output.c and the ip6_ufo_append_data function in net/ipv6/ip6_output.c (CVE-2013-4470).

The ext4_orphan_del function in fs/ext4/namei.c in the Linux kernel before 3.7.3 does not properly handle orphan-list entries for non-journal filesystems, which allows physically proximate attackers to cause a denial of service (system hang) via a crafted filesystem on removable media, as demonstrated by the e2fsprogs tests/f_orphan_extents_inode/image.gz test (CVE-2013-2015).

net/ipv6/ip6_output.c in the Linux kernel through 3.11.4 does not properly determine the need for UDP Fragmentation Offload (UFO) processing of small packets after the UFO queueing of a large packet, which allows remote attackers to cause a denial of service (memory corruption and system crash) or possibly have unspecified other impact via network traffic that triggers a large response packet (CVE-2013-4387).

The IPv6 SCTP implementation in net/sctp/ipv6.c in the Linux kernel through 3.11.1 uses data structures and function calls that do not trigger an intended configuration of IPsec encryption, which allows remote attackers to obtain sensitive information by sniffing the network (CVE-2013-4350).

The updated packages provides a solution for these security issues.

The SUSE Linux Enterprise 11 SP3 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

  - 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 (bnc#955654).

  - CVE-2015-7509: fs/ext4/namei.c in the Linux kernel     allowed physically proximate attackers to cause a denial     of service (system crash) via a crafted no-journal     filesystem, a related issue to CVE-2013-2015     (bnc#956707).

  - CVE-2015-7515: An out of bounds memory access in the     aiptek USB driver could be used by physical local     attackers to crash the kernel (bnc#956708).

  - CVE-2015-7550: The keyctl_read_key function in     security/keys/keyctl.c in the Linux kernel did not     properly use a semaphore, which allowed local users to     cause a denial of service (NULL pointer dereference and     system crash) or possibly have unspecified other impact     via a crafted application that leverages a race     condition between keyctl_revoke and keyctl_read calls     (bnc#958951).

  - CVE-2015-7566: A malicious USB device could cause kernel     crashes in the visor device driver (bnc#961512).

  - CVE-2015-7799: The slhc_init function in     drivers/net/slip/slhc.c in the Linux kernel did not     ensure that certain slot numbers are valid, which     allowed local users to cause a denial of service (NULL     pointer dereference and system crash) via a crafted     PPPIOCSMAXCID ioctl call (bnc#949936).

  - CVE-2015-8215: net/ipv6/addrconf.c in the IPv6 stack in     the Linux kernel did not validate attempted changes to     the MTU value, which allowed context-dependent attackers     to cause a denial of service (packet loss) via a value     that is (1) smaller than the minimum compliant value or     (2) larger than the MTU of an interface, as demonstrated     by a Router Advertisement (RA) message that is not     validated by a daemon, a different vulnerability than     CVE-2015-0272. NOTE: the scope of CVE-2015-0272 is     limited to the NetworkManager product (bnc#955354).

  - CVE-2015-8539: The KEYS subsystem in the Linux kernel     allowed local users to gain privileges or cause a denial     of service (BUG) via crafted keyctl commands that     negatively instantiate a key, related to     security/keys/encrypted-keys/encrypted.c,     security/keys/trusted.c, and     security/keys/user_defined.c (bnc#958463).

  - CVE-2015-8543: The networking implementation in the     Linux kernel did not validate protocol identifiers for     certain protocol families, which allowed local users to     cause a denial of service (NULL function pointer     dereference and system crash) or possibly gain     privileges by leveraging CLONE_NEWUSER support to     execute a crafted SOCK_RAW application (bnc#958886).

  - CVE-2015-8550: Optimizations introduced by the compiler     could have lead to double fetch vulnerabilities,     potentially possibly leading to arbitrary code execution     in backend (bsc#957988). (bsc#957988 XSA-155).

  - 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-2015-8569: The (1) pptp_bind and (2) pptp_connect     functions in drivers/net/ppp/pptp.c in the Linux kernel     do not verify an address length, which allowed local     users to obtain sensitive information from kernel memory     and bypass the KASLR protection mechanism via a crafted     application (bnc#959190).

  - CVE-2015-8575: The sco_sock_bind function in     net/bluetooth/sco.c in the Linux kernel did not verify     an address length, which allowed local users to obtain     sensitive information from kernel memory and bypass the     KASLR protection mechanism via a crafted application     (bnc#959399).

  - CVE-2015-8767: net/sctp/sm_sideeffect.c in the Linux     kernel did not properly manage the relationship between     a lock and a socket, which allowed local users to cause     a denial of service (deadlock) via a crafted sctp_accept     call (bnc#961509).

  - CVE-2015-8785: The fuse_fill_write_pages function in     fs/fuse/file.c in the Linux kernel allowed local users     to cause a denial of service (infinite loop) via a     writev system call that triggers a zero length for the     first segment of an iov (bnc#963765).

  - CVE-2015-8812: A flaw was found in the CXGB3 kernel     driver when the network was considered congested. The     kernel would incorrectly misinterpret the congestion as     an error condition and incorrectly free/clean up the     skb. When the device would then send the skb's queued,     these structures would be referenced and may panic the     system or allow an attacker to escalate privileges in a     use-after-free scenario.(bsc#966437).

  - CVE-2015-8816: A malicious USB device could cause kernel     crashes in the in hub_activate() function (bnc#968010).

  - CVE-2016-0723: Race condition in the tty_ioctl function     in drivers/tty/tty_io.c in the Linux kernel allowed     local users to obtain sensitive information from kernel     memory or cause a denial of service (use-after-free and     system crash) by making a TIOCGETD ioctl call during     processing of a TIOCSETD ioctl call (bnc#961500).

  - CVE-2016-2069: A race in invalidating paging structures     that were not in use locally could have lead to     disclosoure of information or arbitrary code exectution     (bnc#963767).

  - CVE-2016-2143: On zSeries a fork of a large process     could have caused memory corruption due to incorrect     page table handling. (bnc#970504, LTC#138810).

  - CVE-2016-2184: A malicious USB device could cause kernel     crashes in the alsa usb-audio device driver     (bsc#971125).

  - CVE-2016-2185: A malicious USB device could cause kernel     crashes in the usb_driver_claim_interface function     (bnc#971124).

  - CVE-2016-2186: A malicious USB device could cause kernel     crashes in the powermate device driver (bnc#970958).

  - CVE-2016-2384: A double free on the ALSA umidi object     was fixed. (bsc#966693).

  - CVE-2016-2543: A missing NULL check at remove_events     ioctl in the ALSA seq driver was fixed. (bsc#967972).

  - CVE-2016-2544: Fix race at timer setup and close in the     ALSA seq driver was fixed. (bsc#967973).

  - CVE-2016-2545: A double unlink of active_list in the     ALSA timer driver was fixed. (bsc#967974).

  - CVE-2016-2546: A race among ALSA timer ioctls was fixed     (bsc#967975).

  - CVE-2016-2547,CVE-2016-2548: The ALSA slave timer list     handling was hardened against hangs and races.
    (CVE-2016-2547,CVE-2016-2548,bsc#968011,bsc#968012).

  - CVE-2016-2549: A stall in ALSA hrtimer handling was     fixed (bsc#968013).

  - CVE-2016-2782: A malicious USB device could cause kernel     crashes in the visor device driver (bnc#968670).

  - CVE-2016-3137: A malicious USB device could cause kernel     crashes in the cypress_m8 device driver (bnc#970970).

  - CVE-2016-3139: A malicious USB device could cause kernel     crashes in the wacom device driver (bnc#970909).

  - CVE-2016-3140: A malicious USB device could cause kernel     crashes in the digi_acceleport device driver     (bnc#970892).

  - CVE-2016-3156: A quadratic algorithm could lead to long     kernel ipv4 hangs when removing a device with a large     number of addresses. (bsc#971360).

  - CVE-2016-3955: A remote buffer overflow in the usbip     driver could be used by authenticated attackers to crash     the kernel. (bsc#975945)

  - CVE-2016-2847: A local user could exhaust kernel memory     by pushing lots of data into pipes. (bsc#970948).

  - CVE-2016-2188: A malicious USB device could cause kernel     crashes in the iowarrior device driver (bnc#970956).

  - CVE-2016-3138: A malicious USB device could cause kernel     crashes in the cdc-acm device driver (bnc#970911).

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	Published	Updated	Severity
66486	Debian DSA-2669-1 : linux - privilege escalation/denial of service/information leak	Nessus	Debian Local Security Checks	5/17/2013	9/16/2022	high
290277	Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000721)	Nessus	Unity Linux Local Security Checks	1/16/2026	1/16/2026	medium
93289	SUSE SLES11 Security Update : kernel (SUSE-SU-2016:2074-1)	Nessus	SuSE Local Security Checks	9/2/2016	1/27/2026	critical
66431	Debian DSA-2668-1 : linux-2.6 - privilege escalation/denial of service/information leak	Nessus	Debian Local Security Checks	5/15/2013	1/11/2021	medium
286504	Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-001973)	Nessus	Unity Linux Local Security Checks	1/15/2026	1/15/2026	medium
287001	Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002379)	Nessus	Unity Linux Local Security Checks	1/15/2026	1/15/2026	medium
83611	SUSE SLES11 Security Update : kernel (SUSE-SU-2014:0287-1)	Nessus	SuSE Local Security Checks	5/20/2015	1/19/2021	high
70837	Mandriva Linux Security Advisory : kernel (MDVSA-2013:265)	Nessus	Mandriva Local Security Checks	11/11/2013	1/6/2021	high
90884	SUSE SLES11 Security Update : kernel (SUSE-SU-2016:1203-1)	Nessus	SuSE Local Security Checks	5/4/2016	1/19/2021	critical

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