X.Org is an open source implementation of the X Window System. It providesbasic low-level functionality that full-fledged graphical user interfacesare designed upon.An input validation flaw was discovered in X.org's Security and Recordextensions. A malicious authorized client could exploit this issue to causea denial of service (crash) or, potentially, execute arbitrary code withroot privileges on the X.Org server. (CVE-2008-1377)Multiple integer overflow flaws were found in X.org's Render extension. Amalicious authorized client could exploit these issues to cause a denial ofservice (crash) or, potentially, execute arbitrary code with rootprivileges on the X.Org server. (CVE-2008-2360, CVE-2008-2361,CVE-2008-2362)An input validation flaw was discovered in X.org's MIT-SHM extension. Aclient connected to the X.org server could read arbitrary server memory.This could result in the sensitive data of other users of the X.org serverbeing disclosed. (CVE-2008-1379)Users of xorg-x11-server should upgrade to these updated packages, whichcontain backported patches to resolve these issues.