ImageMagick 7.0.8-50 Q16 has a stack-based buffer overflow at coders/pnm.c in WritePNMImage because of a misplaced strncpy and an off-by-one error.
https://www.debian.org/security/2020/dsa-4715
https://www.debian.org/security/2020/dsa-4712
https://usn.ubuntu.com/4192-1/
https://lists.debian.org/debian-lts-announce/2019/08/msg00021.html
https://github.com/ImageMagick/ImageMagick6/commit/5c7fbf9a14fb83c9685ad69d48899f490a37609d
https://github.com/ImageMagick/ImageMagick/issues/1613
https://github.com/ImageMagick/ImageMagick/commit/29efd648f38b73a64d73f14cd2019d869a585888
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00069.html