Ubuntu Update for lightdm USN-1382-1

Summary
Ubuntu Update for Linux kernel vulnerabilities USN-1382-1
Solution
Please Install the Updated Packages.
Insight
Austin Clements discovered that Light Display Manager incorrectly leaked file descriptors to child processes. A local attacker can use this to bypass intended permissions and write to the log file, cause a denial of service, or possibly have another unknown impact.
Affected
lightdm on Ubuntu 11.10