ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to 7.1.2-31 and 6.9.13-56, a crafted image can cause an invalid memory free in the MVG decoder and crash the process. This issue is fixed in versions 7.1.2-31 and 6.9.13-56.
https://github.com/ImageMagick/ImageMagick6/releases/tag/6.9.13-56
https://github.com/ImageMagick/ImageMagick6/commit/bfe0117fd9742b3970383e000978d64e5e04372d
https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-6xf5-c3jx-rp39
https://github.com/ImageMagick/ImageMagick/releases/tag/7.1.2-31
https://github.com/ImageMagick/ImageMagick/commit/5d29c094020612dc8fb471b10fc1d1cc6e9e4378