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Ubuntu Security Notice USN-2918-1
March 03, 2016

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

- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS

Summary:

pixman could be made to crash or run programs as your login if it processed
specially crafted data.

Software Description:
- pixman: pixel-manipulation library for X and cairo

Details:

Vincent LE GARREC discovered an integer underflow in pixman. If a user were
tricked into opening a specially crafted file, a remote attacker could
cause pixman to crash, resulting in a denial of service, or possibly
execute arbitrary code.

Update instructions:

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

Ubuntu 14.04 LTS:
  libpixman-1-0                   0.30.2-2ubuntu1.1

Ubuntu 12.04 LTS:
  libpixman-1-0                   0.30.2-1ubuntu0.0.0.0.3

After a standard system update you need to restart your session to make
all the necessary changes.

References:
  http://www.ubuntu.com/usn/usn-2918-1
  CVE-2014-9766

Package Information:
  https://launchpad.net/ubuntu/+source/pixman/0.30.2-2ubuntu1.1
  https://launchpad.net/ubuntu/+source/pixman/0.30.2-1ubuntu0.0.0.0.3