GHSA-gq5v-qf8q-fp77: ImageMagick: Heap-based Buffer Overflow in GetPixelIndex due to metadata-cache desynchronization

February 25, 2026

OpenPixelCache updates image channel metadata before attempting pixel cache memory allocation. When both memory and disk allocation fail a heap-buffer-overflow read in occurs in any writer that calls GetPixelIndex.

References

github.com/ImageMagick/ImageMagick
github.com/ImageMagick/ImageMagick/security/advisories/GHSA-gq5v-qf8q-fp77
github.com/advisories/GHSA-gq5v-qf8q-fp77
github.com/dlemstra/Magick.NET/releases/tag/14.10.3

Code Behaviors & Features

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