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USN-2314-1: Linux kernel vulnerability

13 August 2014

The system could be made to crash under certain conditions.




An flaw was discovered in the Linux kernel's audit subsystem when auditing
certain syscalls. A local attacker could exploit this flaw to obtain
potentially sensitive single-bit values from kernel memory or cause a
denial of service (OOPS).

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. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.


Related notices

  • USN-2335-1: linux-ti-omap4, linux-image-3.2.0-1452-omap4
  • USN-2285-1: linux-lts-quantal, linux-image-3.5.0-54-generic
  • USN-2287-1: linux-lts-saucy, linux-image-3.11.0-26-generic, linux-image-3.11.0-26-generic-lpae
  • USN-2286-1: linux-lts-raring, linux-image-3.8.0-44-generic
  • USN-2334-1: linux-image-3.2.0-68-generic, linux-image-3.2.0-68-omap, linux-image-3.2.0-68-powerpc-smp, linux-image-3.2.0-68-highbank, linux-image-3.2.0-68-powerpc64-smp, linux-image-3.2.0-68-virtual, linux-image-3.2.0-68-generic-pae, linux
  • USN-2313-1: linux-lts-trusty, linux-image-3.13.0-33-generic-lpae, linux-image-3.13.0-33-generic
  • USN-2289-1: linux-image-3.11.0-26-generic, linux, linux-image-3.11.0-26-generic-lpae
  • USN-2281-1: linux-image-2.6.32-368-ec2, linux-ec2
  • USN-2282-1: linux-image-2.6.32-64-powerpc64-smp, linux-image-2.6.32-64-generic-pae, linux-image-2.6.32-64-powerpc, linux-image-2.6.32-64-sparc64-smp, linux-image-2.6.32-64-powerpc-smp, linux-image-2.6.32-64-server, linux-image-2.6.32-64-386, linux-image-2.6.32-64-ia64, linux-image-2.6.32-64-virtual, linux-image-2.6.32-64-generic, linux-image-2.6.32-64-versatile, linux-image-2.6.32-64-lpia, linux-image-2.6.32-64-preempt, linux, linux-image-2.6.32-64-sparc64