A Heap Buffer Overflow issue in imagemagick, which has been fixed here: https://github.com/ImageMagick/ImageMagick/commit/9a9896fce95d09e5e47b86baccbe1ce1a2fca76b
Created ImageMagick tracking bugs for this issue: Affects: epel-all [bug 2208544] Affects: fedora-all [bug 2208543]