The DrawDashPolygon function in magick/render.c in GraphicsMagick before 1.3.24 and the SVG renderer in ImageMagick allow remote attackers to cause a denial of service (infinite loop) by converting a circularly defined SVG file.
https://access.redhat.com/errata/RHSA-2016:1237
http://www.securityfocus.com/bid/89348
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
http://www.openwall.com/lists/oss-security/2016/06/02/14
http://www.openwall.com/lists/oss-security/2016/05/01/6
http://www.openwall.com/lists/oss-security/2016/05/01/4
http://www.graphicsmagick.org/ChangeLog-2016.html
http://www.debian.org/security/2016/dsa-3746
http://hg.graphicsmagick.org/hg/GraphicsMagick?cmd=changeset%3Bnode=ddc999ec896c