The iw_get_ui16be function in imagew-util.c:422:24 in libimageworsener.a in ImageWorsener 1.3.1 allows remote attackers to cause a denial of service (heap-based buffer over-read) via a crafted image, related to imagew-jpeg.c.
https://github.com/jsummers/imageworsener/commit/b45cb1b665a14b0175b9cb1502ef7168e1fe0d5d
https://blogs.gentoo.org/ago/2017/05/20/imageworsener-multiple-vulnerabilities/