Ubuntu Update for gdm vulnerability USN-1099-1

Summary
Ubuntu Update for Linux kernel vulnerabilities USN-1099-1
Solution
Please Install the Updated Packages.
Insight
Sebastian Krahmer discovered that GDM (GNOME Display Manager) did not properly drop privileges when handling the cache directories used to store users' dmrc and face icon files. This could allow a local attacker to change the ownership of arbitrary files, thereby gaining root privileges.
Affected
gdm vulnerability on Ubuntu 9.10 , Ubuntu 10.04 LTS , Ubuntu 10.10
References