ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to 7.1.2-31, a client connected to the distributed pixel cache server can send crafted pixel data that triggers an integer-size calculation error and a heap buffer overwrite, crashing the server. This issue is fixed in version 7.1.2-31.
https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-4fq9-vrx7-gv92
https://github.com/ImageMagick/ImageMagick/releases/tag/7.1.2-31
https://github.com/ImageMagick/ImageMagick/commit/c69f54e1c8660e45f2ff83c354bf924a946d9356