Ubuntu Security Notice 618-1 – Memory access issues, buffer overflows, denial of service, race conditions.. all sorts of fun and mayhem has been addressed in the Linux 2.6 kernel branch on Ubuntu.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/67518/USN-618-1.txt
Source: https://packetstormsecurity.com/files/67518/Ubuntu-Security-Notice-618-1.html

