A denial of service flaw (infinite loop) was found in the way ImageMagick processed certain VICAR files: http://seclists.org/oss-sec/2015/q1/608 Upstream issue, including a reproducer: http://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=26933 A patch is not yet available as noted in comment 2 of the above-linked issue.
Created ImageMagick tracking bugs for this issue: Affects: fedora-all [bug 1195274]
A patch should be available for IM6 in http://trac.imagemagick.org/changeset/17856
ImageMagick-6.8.8.10-9.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
CVE assignment: http://seclists.org/oss-sec/2016/q2/481