ImageMagick 7.0.7-0 Q16 has a NULL pointer dereference vulnerability in ReadOneMNGImage in coders/png.c. An attacker can use this to crash the application. Upstream issue: https://github.com/ImageMagick/ImageMagick/issues/723 Upstream patch: https://github.com/ImageMagick/ImageMagick/commit/5a1006a249516a875558c3d642e719b1eac8f820