Ubuntu Update for linux-lts-quantal USN-2269-1

Solution
Please Install the Updated Packages.
Insight
Andy Lutomirski discovered a flaw with the Linux kernel's ptrace syscall on x86_64 processors. An attacker could exploit this flaw to cause a denial of service (System Crash) or potential gain administrative privileges.
Affected
linux-lts-quantal on Ubuntu 12.04 LTS