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=========================================================== Ubuntu Security Notice USN-403-1 January 09, 2007 xorg, xorg-server vulnerabilities CVE-2006-6101, CVE-2006-6102, CVE-2006-6103 =========================================================== A security issue affects the following Ubuntu releases: Ubuntu 5.10 Ubuntu 6.06 LTS Ubuntu 6.10 This advisory also applies to the corresponding versions of Kubuntu, Edubuntu, and Xubuntu. The problem can be corrected by upgrading your system to the following package versions: Ubuntu 5.10: xserver-xorg-core 6.8.2-77.2 Ubuntu 6.06 LTS: xserver-xorg-core 1:1.0.2-0ubuntu10.5 Ubuntu 6.10: xserver-xorg-core 1:1.1.1-0ubuntu12.1 After a standard system upgrade you need to reboot your computer to effect the necessary changes. Details follow: The DBE and Render extensions in X.org were vulnerable to integer overflows, which could lead to memory overwrites. An authenticated user could make a specially crafted request and execute arbitrary code with root privileges.