In ImageMagick 7.0.6-5, a length-validation vulnerability was found in the function ReadPSDLayersInternal in coders/psd.c, which allows attackers to cause a denial of service (ReadPSDImage memory exhaustion) via a crafted file.
https://github.com/ImageMagick/ImageMagick/issues/645
https://lists.debian.org/debian-lts-announce/2020/09/msg00007.html