Secunia Security Advisory – Trustix 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/52299/sa22950.txt
Source: https://packetstormsecurity.com/files/52299/Secunia-Security-Advisory-22950.html