Ubuntu Update for Linux kernel vulnerabilities USN-616-1

Please Install the Updated Packages.

Multiple flaws were found in the RENDER, RECORD, and Security extensions of X.org which did not correctly validate function arguments. An authenticated attacker could send specially crafted requests and gain root privileges or crash X. (CVE-2008-1377, CVE-2008-2360, CVE-2008-2361, CVE-2008-2362) It was discovered that the MIT-SHM extension of X.org did not correctly validate the location of memory during an image copy. An authenticated attacker could exploit this to read arbitrary memory locations within X, exposing sensitive information. (CVE-2008-1379)

xorg-server vulnerabilities on Ubuntu 6.06 LTS , Ubuntu 7.04 , Ubuntu 7.10 , Ubuntu 8.04 LTS