Secunia Security Advisory – Mandriva has issued an update for libpng. This fixes a vulnerability, which can be exploited by malicious people to cause a DoS (Denial of Service).
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/60944/sa27629.txt
Source: https://packetstormsecurity.com/files/60944/Secunia-Security-Advisory-27629.html