A new buffer overflow has been found in LibPNG. Is this of any use to the s etc.?
LibPNG Graphics Library PNG_Set_Strip_Alpha Buffer Overflow Vulnerability
LibPNG is reported susceptible to a buffer-overflow vulnerability. The library fails to perform proper bounds-checking of user-supplied input before copying it to an insufficiently sized memory buffer.
This vulnerability may be exploited to execute attacker-supplied code in the context of an application that relies on the affected library.