Secunia Security Advisory – SCO has issued an update for xserver. This fixes a vulnerability, which potentially can be exploited by malicious, local users to gain escalated privileges.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/45653/sa19796.txt
Source: https://packetstormsecurity.com/files/45653/Secunia-Security-Advisory-19796.html