Ubuntu Update for libcairo vulnerability USN-550-1

Summary
Ubuntu Update for Linux kernel vulnerabilities USN-550-1
Solution
Please Install the Updated Packages.
Insight
Peter Valchev discovered that Cairo did not correctly decode PNG image data. By tricking a user or automated system into processing a specially crafted PNG with Cairo, a remote attacker could execute arbitrary code with user privileges.
Affected
libcairo vulnerability on Ubuntu 6.06 LTS , Ubuntu 6.10 , Ubuntu 7.04 , Ubuntu 7.10