zgv - integer overflows, unsanitised input

Several vulnerabilities have been discovered in zgv, an SVGAlib
graphics viewer for the i386 architecture. The Common Vulnerabilities
and Exposures Project identifies the following problems:

• CAN-2004-1095
  “infamous41md” discovered multiple
  integer overflows in zgv. Remote exploitation of an integer
  overflow vulnerability could allow the execution of arbitrary
  code.

• CAN-2004-0999
  Mikulas Patocka discovered that malicious multiple-image (e.g.
  animated) GIF images can cause a segmentation fault in zgv.

For the stable distribution (woody) these problems have been fixed in
version 5.5-3woody1.

For the unstable distribution (sid) these problems will be fixed soon.

We recommend that you upgrade your zgv package immediately.