The JPEGWarningHandler function in coders/jpeg.c in ImageMagick before 6.7.6-3 allows remote attackers to cause a denial of service (memory consumption) via a JPEG image with a crafted sequence of restart markers.
https://exchange.xforce.ibmcloud.com/vulnerabilities/74658
http://www.ubuntu.com/usn/USN-2132-1
http://www.securitytracker.com/id?1027032
http://www.securityfocus.com/bid/52898
http://www.imagemagick.org/discourse-server/viewtopic.php?f=4&t=20629
http://www.debian.org/security/2012/dsa-2462
http://rhn.redhat.com/errata/RHSA-2012-0545.html
http://rhn.redhat.com/errata/RHSA-2012-0544.html
http://lists.opensuse.org/opensuse-updates/2012-06/msg00001.html