Secunia Security Advisory – Ubuntu has issued an update for redhat-cluster. This fixes some vulnerabilities, which can be exploited by malicious, local users to perform certain actions with escalated privileges and cause a DoS (Denial of Service).
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/84107/sa37892.txt
Source: https://packetstormsecurity.com/files/84107/Secunia-Security-Advisory-37892.html