Secunia Security Advisory – Mandriva has issued an update for libpng. This fixes some vulnerabilities, 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/52213/sa22956.txt
Source: https://packetstormsecurity.com/files/52213/Secunia-Security-Advisory-22956.html