ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to 7.1.2-30 and 6.9.13-55, when ImageMagick is built without Cairo support, a crafted RSVG image that reaches a resource limit can cause the RSVG decoder to free image state twice and then use freed memory, crashing the process. This issue is fixed in versions 7.1.2-30 and 6.9.13-55.
https://github.com/ImageMagick/ImageMagick6/releases/tag/6.9.13-55
https://github.com/ImageMagick/ImageMagick6/commit/04a4c5b89c034cf2c93bb0a10044332d941b4fa5
https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-f2r2-qw7g-3c8x
https://github.com/ImageMagick/ImageMagick/releases/tag/7.1.2-30
https://github.com/ImageMagick/ImageMagick/commit/326451aae51ac2dabc99fe66e063de6ec14cf8c8