regexp.c in Artifex Software, Inc. MuJS allows attackers to cause a denial of service (NULL pointer dereference and crash) via vectors related to regular expression compilation.
git.ghostscript.com/?p=mujs.git%3Bh=fd003eceda531e13fbdd1aeb6e9c73156496e569
www.openwall.com/lists/oss-security/2017/01/12/9
www.openwall.com/lists/oss-security/2017/01/13/1
bugs.ghostscript.com/show_bug.cgi?id=697381
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T3U5APFS3FEBOPXUJIFWBNU55PYR7ZBF/