Secunia Security Advisory – Ubuntu has issued an update for xen. This fixes a vulnerability, which can be exploited by malicious, local users to gain escalated privileges.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/59974/sa27161.txt
Source: https://packetstormsecurity.com/files/59974/Secunia-Security-Advisory-27161.html