ImageMagick 7.0.8-50 Q16 has a heap-based buffer over-read at MagickCore/pixel-accessor.h in GetPixelChannel.
Created ImageMagick tracking bugs for this issue:
Affects: fedora-all [bug 1730585]
This issue did not affect the versions of ImageMagick as shipped with Red Hat Enterprise Linux 7 as they did not include the vulnerable code.
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):