This affects <=0.59r. A sample exploit is located at: http://downloads.securityfocus.com/vulnerabilities/exploits/mpg1DoS3.pl By tricking a user into playing a specially crafted file, an attacker can cause a SEGFAULT. There may also be other impacts.
Tried with 0.59r and it broke; 0.59s doesn't break and we don't have 0.59r in the tree anymore either so bug invalid.