The Render extension of the X.org server incorrectly calculated the size of a memory buffer, which led to a buffer overflow. A local attacker could exploit this to crash the X server or even execute arbitrary code with root privileges.
The problem can be corrected by updating your system to the following package versions:
4 May 2006
A security issue affects these releases of Ubuntu and its derivatives:
The Render extension of the X.org server incorrectly calculated the size of a memory buffer, which led to a buffer overflow. A local attacker could exploit this to crash the X server or even execute arbitrary code with root privileges.
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
Vulmon