Eye of GNOME (aka eog) 3.16.5, 3.17.x, 3.18.x before 3.18.3, 3.19.x, and 3.20.x before 3.20.4, when used with glib before 2.44.1, allow remote attackers to cause a denial of service (out-of-bounds write and crash) via vectors involving passing invalid UTF-8 to GMarkup.
https://www.exploit-db.com/exploits/40291/
https://lists.debian.org/debian-lts-announce/2020/04/msg00018.html
https://git.gnome.org/browse/eog/plain/NEWS?h=3.20.4
https://git.gnome.org/browse/eog/plain/NEWS?h=3.18.3
https://git.gnome.org/browse/eog/plain/NEWS?h=3.16.5
https://git.gnome.org/browse/eog/commit/?id=e99a8c00f959652fe7c10e2fa5a3a7a5c25e6af4
https://bugzilla.gnome.org/show_bug.cgi?id=770143
http://www.ubuntu.com/usn/USN-3069-1
http://www.securityfocus.com/bid/92616
http://lists.opensuse.org/opensuse-updates/2016-09/msg00021.html