1.314. xorg-x11-server

Updated xorg-x11-server packages that fix multiple security issues are now available for Red Hat Enterprise Linux 5 and 6.
The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) associated with each description below.
X.Org is an open source implementation of the X Window System. It provides the basic low-level functionality that full-fledged graphical user interfaces are designed upon.

Security Fixes

CVE-2010-4818
Multiple input sanitization flaws were found in the X.Org GLX (OpenGL extension to the X Window System) extension. A malicious, authorized client could use these flaws to crash the X.Org server or, potentially, execute arbitrary code with root privileges.
CVE-2010-4819
An input sanitization flaw was found in the X.Org Render extension. A malicious, authorized client could use this flaw to leak arbitrary memory from the X.Org server process, or possibly crash the X.Org server.
Users of xorg-x11-server should upgrade to these updated packages, which contain backported patches to resolve these issues. All running X.Org server instances must be restarted for this update to take effect.
Updated xorg-x11-server packages that fix one bug are now available.
The xorg-x11-server provides the X.Org sample implementation of a server for the X Window System. It provides the rendering services necessary for graphical user environments like GNOME.
Bug Fix
BZ#625564, BZ#627719, BZ#633281, BZ#636904, BZ#638234
In previous releases, drivers using RANDR-style output setup (Radeon, Nouveau, and Intel) selected a default resolution of 1024x768 when no EDID information was available from the monitor. Older, non-RANDR-style drivers, however,defaulted to 800x600 in this situation. This update corrects the defaults for non-RANDR-style drivers to 1024x768 for consistency.
All xorg-x11-server users are advised to upgrade to these updated packages, which fix this bug.