Secunia Security Advisory – Fedora has issued an update for xorg-x11-server. 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/62995/sa28627.txt
Source: https://packetstormsecurity.com/files/62995/Secunia-Security-Advisory-28627.html