ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to version 7.1.2-23, due to a missing depth check a stack overflow can occur in the fx operation by passing a crafted argument. This issue has been patched in version 7.1.2-23.
https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-rcr6-g7jc-f57g