Secunia Security Advisory – Red Hat has issued an update for xen. This fixes some vulnerabilities and a security issue, which can be exploited by malicious, local users to bypass certain security restrictions, cause a DoS (Denial of Service), or truncate arbitrary files.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/66380/sa29963.txt
Source: https://packetstormsecurity.com/files/66380/Secunia-Security-Advisory-29963.html