The jpc_undo_roi function in libjasper/jpc/jpc_dec.c in JasPer 1.900.27 allows remote attackers to cause a denial of service (invalid memory read and crash) via a crafted image.
https://security.gentoo.org/glsa/201908-03
https://blogs.gentoo.org/ago/2017/01/16/jasper-invalid-memory-read-in-jpc_undo_roi-jpc_dec-c/
http://www.securityfocus.com/bid/95682
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00085.html
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00082.html