USN-1322-1: Linux kernel vulnerability
9 January 2012
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 11.10
Several security issues were fixed in the kernel.
- linux - Linux kernel
Nick Bowler discovered the kernel GHASH message digest algorithm incorrectly handled error conditions. A local attacker could exploit this to cause a kernel oops.
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 11.10
- linux-image-3.0.0-14-generic - 3.0.0-14.23
- linux-image-3.0.0-14-generic-pae - 3.0.0-14.23
- linux-image-3.0.0-14-omap - 3.0.0-14.23
- linux-image-3.0.0-14-powerpc - 3.0.0-14.23
- linux-image-3.0.0-14-powerpc-smp - 3.0.0-14.23
- linux-image-3.0.0-14-powerpc64-smp - 3.0.0-14.23
- linux-image-3.0.0-14-server - 3.0.0-14.23
- linux-image-3.0.0-14-virtual - 3.0.0-14.23
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
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.