Ubuntu Security Notices
USN-1992-1

USN-1992-1: Linux kernel vulnerability

Publication date

22 October 2013

Overview

The system could be made to expose sensitive information to a local user.

Releases

12.04

Packages

linux - Linux kernel

Details

An information leak was discovered in the Linux kernel when reading
broadcast messages from the notify_policy interface of the IPSec
key_socket. A local user could exploit this flaw to examine potentially
sensitive information in kernel memory.

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
12.04 precise	linux-image-3.2.0-55-generic-pae – 3.2.0-55.85
	linux-image-3.2.0-55-powerpc64-smp – 3.2.0-55.85
	linux-image-3.2.0-55-highbank – 3.2.0-55.85
	linux-image-3.2.0-55-virtual – 3.2.0-55.85
	linux-image-3.2.0-55-generic – 3.2.0-55.85
	linux-image-3.2.0-55-powerpc-smp – 3.2.0-55.85
	linux-image-3.2.0-55-omap – 3.2.0-55.85

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References

CVE-2013-2237

CVE-2013-2237

Have additional questions?

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