Referenced CVEs: 
CVE-2009-1185, CVE-2009-1186
Description: 
=========================================================== Ubuntu Security Notice USN-758-1 April 15, 2009 udev vulnerabilities CVE-2009-1185, CVE-2009-1186 =========================================================== A security issue affects the following Ubuntu releases: Ubuntu 6.06 LTS Ubuntu 7.10 Ubuntu 8.04 LTS Ubuntu 8.10 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 6.06 LTS: udev 079-0ubuntu35.1 Ubuntu 7.10: udev 113-0ubuntu17.2 Ubuntu 8.04 LTS: udev 117-8ubuntu0.2 Ubuntu 8.10: udev 124-9ubuntu0.2 After a standard system upgrade you need to reboot your computer to effect the necessary changes. Details follow: Sebastian Krahmer discovered that udev did not correctly validate netlink message senders. A local attacker could send specially crafted messages to udev in order to gain root privileges. (CVE-2009-1185) Sebastian Krahmer discovered a buffer overflow in the path encoding routines in udev. A local attacker could exploit this to crash udev, leading to a denial of service. (CVE-2009-1186)