"Coverity Inc., which makes source code analysis software,
announced May 2 that the biggest X Window System security
vulnerability of the last six years has been identified and fixed,
thanks to developers working with the U.S. Department of Homeland
Security (DHS). Thankfully, the hole was plugged within a week,
according to the company.
"Using Coverity Prevent on the DHS project, developers tracked
down a critical security vulnerability in the X Window System, the
graphical user interface (GUI) framework found in most Linux and
Unix and systems. The X Window System also ships as an optional GUI
with Macintosh computers from Apple..."