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USN-2931-1: Linux kernel (Utopic HWE) vulnerabilities

14 March 2016

Several security issues were fixed in the kernel.

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Releases

Packages

Details

Ben Hawkes discovered that the Linux netfilter implementation did not
correctly perform validation when handling IPT_SO_SET_REPLACE events. A
local unprivileged attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code with administrative
privileges. (CVE-2016-3134)

It was discovered that the Linux kernel did not properly enforce rlimits
for file descriptors sent over UNIX domain sockets. A local attacker could
use this to cause a denial of service. (CVE-2013-4312)

It was discovered that a race condition existed when handling heartbeat-
timeout events in the SCTP implementation of the Linux kernel. A remote
attacker could use this to cause a denial of service. (CVE-2015-8767)

Andy Lutomirski discovered a race condition in the Linux kernel's
translation lookaside buffer (TLB) handling of flush events. A local
attacker could use this to cause a denial of service or possibly leak
sensitive information. (CVE-2016-2069)

Andrey Konovalov discovered that the ALSA USB MIDI driver incorrectly
performed a double-free. A local attacker with physical access could use
this to cause a denial of service (system crash) or possibly execute
arbitrary code with administrative privileges. (CVE-2016-2384)

Dmitry Vyukov discovered that the Advanced Linux Sound Architecture (ALSA)
framework did not verify that a FIFO was attached to a client before
attempting to clear it. A local attacker could use this to cause a denial
of service (system crash). (CVE-2016-2543)

Dmitry Vyukov discovered that a race condition existed in the Advanced
Linux Sound Architecture (ALSA) framework between timer setup and closing
of the client, resulting in a use-after-free. A local attacker could use
this to cause a denial of service. (CVE-2016-2544)

Dmitry Vyukov discovered a race condition in the timer handling
implementation of the Advanced Linux Sound Architecture (ALSA) framework,
resulting in a use-after-free. A local attacker could use this to cause a
denial of service (system crash). (CVE-2016-2545)

Dmitry Vyukov discovered race conditions in the Advanced Linux Sound
Architecture (ALSA) framework's timer ioctls leading to a use-after-free. A
local attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2016-2546)

Dmitry Vyukov discovered that the Advanced Linux Sound Architecture (ALSA)
framework's handling of high resolution timers did not properly manage its
data structures. A local attacker could use this to cause a denial of
service (system hang or crash) or possibly execute arbitrary code.
(CVE-2016-2547, CVE-2016-2548)

Dmitry Vyukov discovered that the Advanced Linux Sound Architecture (ALSA)
framework's handling of high resolution timers could lead to a deadlock
condition. A local attacker could use this to cause a denial of service
(system hang). (CVE-2016-2549)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 14.04

After a standard system update you need to reboot your computer to make
all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.

Related notices

  • USN-2929-1: linux-image-3.13.0-83-powerpc64-emb, linux, linux-image-3.13.0-83-powerpc-e500, linux-image-extra-3.13.0-83-generic, linux-image-3.13.0-83-powerpc64-smp, linux-image-3.13.0-83-generic-lpae, linux-image-3.13.0-83-lowlatency, linux-image-3.13.0-83-powerpc-e500mc, linux-image-3.13.0-83-generic, linux-image-3.13.0-83-powerpc-smp
  • USN-2929-2: linux-image-3.13.0-83-generic, linux-image-3.13.0-83-generic-lpae, linux-lts-trusty
  • USN-2967-2: linux-image-3.2.0-1480-omap4, linux-ti-omap4
  • USN-2967-1: linux-image-3.2.0-102-powerpc64-smp, linux, linux-image-3.2.0-102-omap, linux-image-3.2.0-102-generic, linux-image-3.2.0-102-virtual, linux-image-3.2.0-102-highbank, linux-image-3.2.0-102-powerpc-smp, linux-image-3.2.0-102-generic-pae
  • USN-2908-2: linux-image-4.2.0-30-generic, linux-image-4.2.0-30-powerpc64-smp, linux-image-4.2.0-30-powerpc-e500mc, linux-lts-wily, linux-image-4.2.0-30-lowlatency, linux-image-extra-4.2.0-30-generic, linux-image-4.2.0-30-generic-lpae, linux-image-4.2.0-30-powerpc-smp, linux-image-4.2.0-30-powerpc64-emb
  • USN-2932-1: linux-image-3.19.0-56-powerpc64-emb, linux-image-3.19.0-56-generic-lpae, linux-image-extra-3.19.0-56-generic, linux-lts-vivid, linux-image-3.19.0-56-generic, linux-image-3.19.0-56-lowlatency, linux-image-3.19.0-56-powerpc64-smp, linux-image-3.19.0-56-powerpc-smp, linux-image-3.19.0-56-powerpc-e500mc
  • USN-2908-3: linux-image-4.2.0-1025-raspi2, linux-raspi2
  • USN-2908-1: linux-image-4.2.0-30-generic, linux-image-4.2.0-30-powerpc64-smp, linux-image-4.2.0-30-powerpc-e500mc, linux, linux-image-4.2.0-30-lowlatency, linux-image-4.2.0-30-generic-lpae, linux-image-4.2.0-30-powerpc-smp, linux-image-4.2.0-30-powerpc64-emb
  • USN-2930-2: linux-image-4.2.0-34-generic-lpae, linux-image-extra-4.2.0-34-generic, linux-lts-wily, linux-image-4.2.0-34-powerpc-e500mc, linux-image-4.2.0-34-powerpc-smp, linux-image-4.2.0-34-powerpc64-emb, linux-image-4.2.0-34-lowlatency, linux-image-4.2.0-34-powerpc64-smp, linux-image-4.2.0-34-generic
  • USN-3083-1: linux-image-extra-3.13.0-96-generic, linux, linux-image-3.13.0-96-powerpc64-emb, linux-image-3.13.0-96-generic-lpae, linux-image-3.13.0-96-powerpc-e500, linux-image-3.13.0-96-powerpc-smp, linux-image-3.13.0-96-lowlatency, linux-image-3.13.0-96-powerpc-e500mc, linux-image-3.13.0-96-powerpc64-smp, linux-image-3.13.0-96-generic
  • USN-3083-2: linux-image-3.13.0-96-generic-lpae, linux-lts-trusty, linux-image-3.13.0-96-generic
  • USN-2930-3: linux-image-4.2.0-1027-raspi2, linux-raspi2
  • USN-2930-1: linux-image-4.2.0-34-generic-lpae, linux, linux-image-4.2.0-34-powerpc-e500mc, linux-image-4.2.0-34-powerpc-smp, linux-image-4.2.0-34-powerpc64-emb, linux-image-4.2.0-34-lowlatency, linux-image-4.2.0-34-powerpc64-smp, linux-image-4.2.0-34-generic
  • USN-2989-1: linux-image-extra-3.13.0-87-generic, linux-image-3.13.0-87-powerpc-e500, linux, linux-image-3.13.0-87-lowlatency, linux-image-3.13.0-87-powerpc64-smp, linux-image-3.13.0-87-generic, linux-image-3.13.0-87-generic-lpae, linux-image-3.13.0-87-powerpc-smp, linux-image-3.13.0-87-powerpc-e500mc, linux-image-3.13.0-87-powerpc64-emb
  • USN-2998-1: linux-image-3.13.0-88-generic, linux-image-3.13.0-88-generic-lpae, linux-lts-trusty
  • USN-2928-1: linux, linux-image-3.2.0-101-omap, linux-image-3.2.0-101-generic-pae, linux-image-3.2.0-101-highbank, linux-image-3.2.0-101-virtual, linux-image-3.2.0-101-powerpc64-smp, linux-image-3.2.0-101-powerpc-smp, linux-image-3.2.0-101-generic
  • USN-2928-2: linux-image-3.2.0-1479-omap4, linux-ti-omap4
  • USN-3050-1: linux-ti-omap4, linux-image-3.2.0-1485-omap4
  • USN-3049-1: linux-image-3.2.0-107-generic, linux, linux-image-3.2.0-107-highbank, linux-image-3.2.0-107-virtual, linux-image-3.2.0-107-omap, linux-image-3.2.0-107-powerpc64-smp, linux-image-3.2.0-107-generic-pae, linux-image-3.2.0-107-powerpc-smp