Secunia Security Advisory – Red Hat has issued an update for compiz. This fixes a security issue, which can be exploited by malicious people with physical access to a system to bypass certain security restrictions.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/66715/sa30329.txt
Source: https://packetstormsecurity.com/files/66715/Secunia-Security-Advisory-30329.html