In ImageMagick 7.0.8-13 Q16, there is an infinite loop in the ReadBMPImage function of the coders/bmp.c file. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted bmp file.
https://usn.ubuntu.com/4034-1/
https://lists.debian.org/debian-lts-announce/2020/08/msg00030.html