coders/tiff.c in ImageMagick before 7.0.3.7 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a crafted image.
https://github.com/ImageMagick/ImageMagick/issues/298
https://github.com/ImageMagick/ImageMagick/commit/b61d35eaccc0a7ddeff8a1c3abfcd0a43ccf210b
https://blogs.gentoo.org/ago/2016/11/19/imagemagick-null-pointer-must-never-be-null-tiff-c/
http://www.securityfocus.com/bid/94489
http://www.openwall.com/lists/oss-security/2016/11/23/4