Secunia Security Advisory – Red Hat has issued an update for xorg-x11-server. This fixes some vulnerabilities, which can be exploited by malicious, local users to cause a DoS (Denial of Service), disclose potentially sensitive information, or to gain escalated privileges.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/67247/sa30630.txt
Source: https://packetstormsecurity.com/files/67247/Secunia-Security-Advisory-30630.html