1. Ubuntu Security Notices
  2. USN-1344-1

USN-1344-1: Linux kernel vulnerabilities

Publication date

24 January 2012

Overview

Several security issues were fixed in the kernel.

Releases

Packages

Details

Clement Lecigne discovered a bug in the HFS filesystem. A local attacker
could exploit this to cause a kernel oops. (CVE-2011-2203)

A flaw was found in how the Linux kernel handles user-defined key types. An
unprivileged local user could exploit this to crash the system.
(CVE-2011-4110)

Clement Lecigne discovered a bug in the HFS filesystem. A local attacker
could exploit this to cause a kernel oops. (CVE-2011-2203)

A flaw was found in how the Linux kernel handles user-defined key types. An
unprivileged local user could exploit this to crash the system.
(CVE-2011-4110)

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-2.6.32-38-powerpc –  2.6.32-38.83
linux-image-2.6.32-38-386 –  2.6.32-38.83
linux-image-2.6.32-38-sparc64 –  2.6.32-38.83
linux-image-2.6.32-38-generic-pae –  2.6.32-38.83
linux-image-2.6.32-38-preempt –  2.6.32-38.83
linux-image-2.6.32-38-lpia –  2.6.32-38.83
linux-image-2.6.32-38-sparc64-smp –  2.6.32-38.83
linux-image-2.6.32-38-powerpc64-smp –  2.6.32-38.83
linux-image-2.6.32-38-versatile –  2.6.32-38.83
linux-image-2.6.32-38-generic –  2.6.32-38.83
linux-image-2.6.32-38-ia64 –  2.6.32-38.83
linux-image-2.6.32-38-server –  2.6.32-38.83
linux-image-2.6.32-38-powerpc-smp –  2.6.32-38.83
linux-image-2.6.32-38-virtual –  2.6.32-38.83

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References

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