Mandriva Linux Security Advisory – An input validation flaw was found in X.org’s Security and Record extensions. A malicious authorized client could exploit the issue to cause a denial of service (crash) or possibly execute arbitrary code with root privileges on the X.org server. An input validation flaw was found in X.org’s MIT-SHM extension. A client connected to the X.org server could read arbitrary server memory, resulting in the disclosure of sensitive data of other users of the X.org server. Multiple integer overflows were found in X.org’s Render extension. A malicious authorized client could exploit these issues to cause a denial of service (crash) or possibly execute arbitrary code with root privileges on the X.org server.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/67365/MDVSA-2008-115.txt
Source: https://packetstormsecurity.com/files/67365/Mandriva-Linux-Security-Advisory-2008-115.html