1. Ubuntu Security Notices
  2. USN-1322-1

USN-1322-1: Linux kernel vulnerability

Publication date

9 January 2012

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
11.10 oneiric linux-image-3.0.0-14-powerpc64-smp –  3.0.0-14.23
linux-image-3.0.0-14-omap –  3.0.0-14.23
linux-image-3.0.0-14-generic –  3.0.0-14.23
linux-image-3.0.0-14-server –  3.0.0-14.23
linux-image-3.0.0-14-powerpc-smp –  3.0.0-14.23
linux-image-3.0.0-14-virtual –  3.0.0-14.23
linux-image-3.0.0-14-powerpc –  3.0.0-14.23
linux-image-3.0.0-14-generic-pae –  3.0.0-14.23

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References

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