Ubuntu Security Notice 578-1 – A large amount of denial of service, buffer overflow, and privilege escalation vulnerabilities have been addressed in the linux-source-2.6.15 package.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/63643/USN-578-1.txt
Source: https://packetstormsecurity.com/files/63643/Ubuntu-Security-Notice-578-1.html