There is an illegal READ memory access at caca/dither.c (function get_rgba_default) in libcaca 0.99.beta19 for the default bpp case.
lists.opensuse.org/opensuse-security-announce/2019-04/msg00033.html
bugzilla.redhat.com/show_bug.cgi?id=1652622
github.com/cacalabs/libcaca/commit/1022d97496c7899e8641515af363381b31ae2f05
github.com/cacalabs/libcaca/issues/38
lists.debian.org/debian-lts-announce/2019/01/msg00007.html
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6WFGYICNTMNDNMDDUV4G2RYFB5HNJCOV/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PC7EGOEQ5C4OD66ZUJJIIYEXBTZOCMZX/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZSBCRN6EGQJUVOSD4OEEQ6XORHEM2CUL/
usn.ubuntu.com/3860-1/
usn.ubuntu.com/3860-2/