[USN-1275-1] Linux kernel vulnerability

[John Johansen]

==========================================================================
Ubuntu Security Notice USN-1275-1
November 21, 2011

linux vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 11.10

Summary:

The system could be made to expose sensitive information locally.

Software Description:
- linux: Linux kernel

Details:

Vasiliy Kulikov discovered that taskstats did not enforce access
restrictions. A local attacker could exploit this to read certain
information, leading to a loss of privacy.

Update instructions:

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

Ubuntu 11.10:
  linux-image-3.0.0-13-generic    3.0.0-13.22
  linux-image-3.0.0-13-generic-pae  3.0.0-13.22
  linux-image-3.0.0-13-omap       3.0.0-13.22
  linux-image-3.0.0-13-powerpc    3.0.0-13.22
  linux-image-3.0.0-13-powerpc-smp  3.0.0-13.22
  linux-image-3.0.0-13-powerpc64-smp  3.0.0-13.22
  linux-image-3.0.0-13-server     3.0.0-13.22
  linux-image-3.0.0-13-virtual    3.0.0-13.22

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.

References:
  http://www.ubuntu.com/usn/usn-1275-1
  CVE-2011-2494

Package Information:
  https://launchpad.net/ubuntu/+source/linux/3.0.0-13.22


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