ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to 7.1.2-31, a crafted Magick script can cause an opened file pointer to remain unclosed, allowing repeated processing to exhaust available file descriptors. This issue is fixed in version 7.1.2-31.
https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-2w4h-697j-4vrm
https://github.com/ImageMagick/ImageMagick/releases/tag/7.1.2-31
https://github.com/ImageMagick/ImageMagick/commit/86672a16cedbf5a06d64e629e058310d683bb48e