Threats Tagged 'cve-2026-77118'
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Threats Tagged 'cve-2026-77118'
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CVE-2026-77118: CWE-787 Out-of-bounds write in GraphicsMagick Group GraphicsMagickCVE-2026-77118 0 A heap out-of-bounds write exists in the Photo CD (PCD) decoder of GraphicsMagick. In DecodeImage() (coders/pcd.c), the Huffman delta loop advances its output pointer with q++ after every decoded delta and never checks it against the end of the heap-allocated luma/chroma plane buffers. The pointer is repositioned only when a sync marker introduces a new plane/row; between sync markers the run length is bounded solely by the input. A crafted PCD file that positions the pointer near the end of a plane and then supplies a long run of deltas with no intervening sync therefore walks the pointer past the end of the allocation and writes through it. Processing an untrusted PCD file — for example with gm convert or gm identify, or through any application linked against libGraphicsMagick — can corrupt heap memory beyond the buffers. Join the discussion | CVE Database V5 | 08/20/2026, 12:42:42 UTC Added: 08/20/2026, 13:07:47 UTC |
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