The ReadMATImageV4 function in coders/mat.c in ImageMagick 7.0.8-7 uses an uninitialized variable, leading to memory corruption.Referenceshttps://github.com/ImageMagick/ImageMagick/issues/1221https://usn.ubuntu.com/3785-1/https://lists.debian.org/debian-lts-announce/2020/08/msg00030.html
