The mark_line_tr function in gxscanc.c in Artifex Ghostscript 9.21 allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted PostScript document. Upstream bug: https://bugs.ghostscript.com/show_bug.cgi?id=697810
Created ghostscript tracking bugs for this issue: Affects: fedora-all [bug 1451250]