SDL (Simple DirectMedia Layer) through 1.2.15 and 2.x through 2.0.9 has a heap-based buffer over-read in Blit1to4 in video/SDL_blit_1.c.
https://usn.ubuntu.com/4238-1/
https://usn.ubuntu.com/4156-2/
https://usn.ubuntu.com/4156-1/
https://usn.ubuntu.com/4143-1/
https://security.gentoo.org/glsa/202305-17
https://security.gentoo.org/glsa/201909-07
https://lists.debian.org/debian-lts-announce/2023/02/msg00008.html
https://lists.debian.org/debian-lts-announce/2021/10/msg00032.html
https://lists.debian.org/debian-lts-announce/2021/01/msg00024.html
https://lists.debian.org/debian-lts-announce/2019/10/msg00021.html
https://lists.debian.org/debian-lts-announce/2019/10/msg00020.html
https://lists.debian.org/debian-lts-announce/2019/07/msg00026.html
https://lists.debian.org/debian-lts-announce/2019/07/msg00021.html
https://lists.debian.org/debian-lts-announce/2019/03/msg00016.html
https://lists.debian.org/debian-lts-announce/2019/03/msg00015.html
https://discourse.libsdl.org/t/vulnerabilities-found-in-libsdl-1-2-15/25720
https://bugzilla.libsdl.org/show_bug.cgi?id=4498
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00030.html
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00014.html
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00088.html
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00073.html
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00063.html