imlib2 - security update

Several vulnerabilities were discovered in imlib2, an image manipulation
library.

• CVE-2011-5326
  Kevin Ryde discovered that attempting to draw a 2x1 radi ellipse
  results in a floating point exception.
• CVE-2014-9771
  It was discovered that an integer overflow could lead to invalid
  memory reads and unreasonably large memory allocations.
• CVE-2016-3993
  Yuriy M. Kaminskiy discovered that drawing using coordinates from
  an untrusted source could lead to an out-of-bound memory read, which
  in turn could result in an application crash.
• CVE-2016-3994
  Jakub Wilk discovered that a malformed image could lead to an
  out-of-bound read in the GIF loader, which may result in an
  application crash or information leak.
• CVE-2016-4024
  Yuriy M. Kaminskiy discovered an integer overflow that could lead to
  an insufficient heap allocation and out-of-bound memory write.

For the oldstable distribution (wheezy), these problems have been fixed
in version 1.4.5-1+deb7u2.

For the stable distribution (jessie), these problems have been fixed in
version 1.4.6-2+deb8u2.

For the unstable distribution (sid), these problems have been fixed in
version 1.4.8-1.

We recommend that you upgrade your imlib2 packages.