1. Ubuntu Security Notices
  2. USN-1313-1

USN-1313-1: Linux Kernel (Oneiric backport) vulnerability

Publication date

19 December 2011

Overview

Several security issues were fixed in the kernel.

Releases

Packages

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.

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

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

Learn more about how to get the fixes.

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.

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

Ubuntu Release Package Version
10.04 lucid linux-image-3.0.0-14-generic –  3.0.0-14.23~lucid1
linux-image-3.0.0-14-server –  3.0.0-14.23~lucid1
linux-image-3.0.0-14-generic-pae –  3.0.0-14.23~lucid1
linux-image-3.0.0-14-virtual –  3.0.0-14.23~lucid1

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References

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