=========================================================================Ubuntu Security Notice USN-2722-1
August 26, 2015

gdk-pixbuf vulnerability
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 15.04
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS

Summary:

GDK-PixBuf could be made to crash or run programs as your login if it
opened a specially crafted file.

Software Description:
- gdk-pixbuf: GDK Pixbuf library

Details:

Gustavo Grieco discovered that GDK-PixBuf incorrectly handled scaling
bitmap images. If a user or automated system were tricked into opening a
BMP image file, a remote attacker could use this flaw to cause GDK-PixBuf
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 15.04:
  libgdk-pixbuf2.0-0              2.31.3-1ubuntu0.1

Ubuntu 14.04 LTS:
  libgdk-pixbuf2.0-0              2.30.7-0ubuntu1.1

Ubuntu 12.04 LTS:
  libgdk-pixbuf2.0-0              2.26.1-1ubuntu1.2

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

References:
  https://ubuntu.com/security/notices/USN-2722-1
  CVE-2015-4491

Package Information:
  https://launchpad.net/ubuntu/+source/gdk-pixbuf/2.31.3-1ubuntu0.1
  https://launchpad.net/ubuntu/+source/gdk-pixbuf/2.30.7-0ubuntu1.1
  https://launchpad.net/ubuntu/+source/gdk-pixbuf/2.26.1-1ubuntu1.2