Ubuntu Security Notice 904-1 - It was discovered that Squid incorrectly handled certain malformed packets received on the HTCP port. A remote attacker could exploit this with a specially-crafted packet and cause Squid to crash, resulting in a denial of service.
d8d35fbd670ceb872134e0a760b1297c0ddf57008a8b14fb9d239abb228c5540