USN-1322-1: Linux kernel vulnerability

09 January 2012

Several security issues were fixed in the kernel.

Releases

Packages

  • linux - Linux kernel

Details

Nick Bowler discovered the kernel GHASH message digest algorithm
incorrectly handled error conditions. A local attacker could exploit this
to cause a kernel oops.

Update instructions

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

Ubuntu 11.10

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.

References

Related notices

  • USN-1304-1: linux-ti-omap4, linux-image-2.6.38-1209-omap4
  • USN-1299-1: linux-image-2.6.32-341-ec2, linux-ec2
  • USN-1287-1: linux-ti-omap4, linux-image-3.0.0-1206-omap4
  • USN-1292-1: linux-image-2.6.35-31-server, linux-lts-backport-maverick, linux-image-2.6.35-31-generic, linux-image-2.6.35-31-virtual, linux-image-2.6.35-31-generic-pae
  • USN-1311-1: linux-image-2.6.32-37-386, linux-image-2.6.32-37-virtual, linux-image-2.6.32-37-ia64, linux-image-2.6.32-37-server, linux-image-2.6.32-37-lpia, linux, linux-image-2.6.32-37-sparc64, linux-image-2.6.32-37-sparc64-smp, linux-image-2.6.32-37-versatile, linux-image-2.6.32-37-generic, linux-image-2.6.32-37-powerpc64-smp, linux-image-2.6.32-37-generic-pae, linux-image-2.6.32-37-preempt, linux-image-2.6.32-37-powerpc, linux-image-2.6.32-37-powerpc-smp
  • USN-1301-1: linux-image-2.6.38-13-virtual, linux-image-2.6.38-13-generic, linux-lts-backport-natty, linux-image-2.6.38-13-generic-pae, linux-image-2.6.38-13-server
  • USN-1302-1: linux-image-2.6.35-903-omap4, linux-ti-omap4
  • USN-1303-1: linux-image-2.6.32-421-dove, linux-mvl-dove
  • USN-1293-1: linux-image-2.6.35-31-versatile, linux-image-2.6.35-31-omap, linux-image-2.6.35-31-powerpc64-smp, linux-image-2.6.35-31-server, linux-image-2.6.35-31-powerpc, linux-image-2.6.35-31-generic, linux, linux-image-2.6.35-31-virtual, linux-image-2.6.35-31-generic-pae, linux-image-2.6.35-31-powerpc-smp
  • USN-1313-1: linux-image-3.0.0-14-generic, linux-lts-backport-oneiric, linux-image-3.0.0-14-generic-pae, linux-image-3.0.0-14-server, linux-image-3.0.0-14-virtual
  • USN-1312-1: linux-image-2.6.38-13-versatile, linux-image-2.6.38-13-powerpc64-smp, linux-image-2.6.38-13-powerpc-smp, linux-image-2.6.38-13-virtual, linux-image-2.6.38-13-generic, linux-image-2.6.38-13-generic-pae, linux-image-2.6.38-13-powerpc, linux-image-2.6.38-13-omap, linux-image-2.6.38-13-server, linux