gdk-pixbuf - security update

Several vulnerabilities have been discovered in gdk-pixbuf, a toolkit
for image loading and pixel buffer manipulation. The Common
Vulnerabilities and Exposures project identifies the following problems:

• CVE-2015-7673
  Gustavo Grieco discovered a heap overflow in the processing of TGA
  images which may result in the execution of arbitrary code or denial
  of service (process crash) if a malformed image is opened.
• CVE-2015-7674
  Gustavo Grieco discovered an integer overflow flaw in the processing
  of GIF images which may result in the execution of arbitrary code or
  denial of service (process crash) if a malformed image is opened.

For the oldstable distribution (wheezy), these problems have been fixed
in version 2.26.1-1+deb7u2.

For the stable distribution (jessie), these problems have been fixed in
version 2.31.1-2+deb8u3.

For the testing distribution (stretch), these problems have been fixed
in version 2.32.1-1 or earlier.

For the unstable distribution (sid), these problems have been fixed in
version 2.32.1-1 or earlier.

We recommend that you upgrade your gdk-pixbuf packages.