Ubuntu Security Notice 549-2 – USN-549-1 fixed vulnerabilities in PHP. However, some upstream changes were incomplete, which caused crashes in certain situations with Ubuntu 7.10.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/61460/USN-549-2.txt
Source: https://packetstormsecurity.com/files/61460/Ubuntu-Security-Notice-549-2.html