Secunia Security Advisory – Red Hat has issued an update for libpng. This fixes some vulnerabilities, which can be exploited by malicious people to disclose potentially sensitive information, 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/91846/sa40618.txt
Source: https://packetstormsecurity.com/files/91846/Secunia-Security-Advisory-40618.html