libjpeg-turbo 2.0.4, and mozjpeg 4.0.0, has a heap-based buffer over-read in get_rgb_row() in rdppm.c via a malformed PPM input file.
https://usn.ubuntu.com/4386-1/
https://security.gentoo.org/glsa/202010-03
https://lists.debian.org/debian-lts-announce/2020/07/msg00033.html
https://github.com/libjpeg-turbo/libjpeg-turbo/issues/433
https://github.com/libjpeg-turbo/libjpeg-turbo/commit/3de15e0c344d11d4b90f4a47136467053eb2d09a
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00062.html
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00031.html