Secunia Security Advisory – Fedora has issued an update for mingw32-libpng. This fixes some vulnerabilities, which can be exploited by malicious people to cause a DoS (Denial of Service) and potentially compromise an application using the library.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/92217/sa40756.txt
Source: https://packetstormsecurity.com/files/92217/Secunia-Security-Advisory-40756.html