CVE-2026-32738

libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and below, a crafted 792-byte HEIF sequence file with samplesperchunk=0 in the stsc box causes an unsigned integer underflow in the Chunk constructor mlastsample = 0 + 0 - 1 = UINT32MAX, mapping all samples to an empty...

graphicsmagick:coder_AVIF_fuzzer: Heap-buffer-overflow in Chunk::Chunk

Project: http://hg.code.sf.net/p/graphicsmagick/code Detailed Report: https://oss-fuzz.com/testcase?key=5916046629601280 Project: graphicsmagick Fuzzing Engine: afl Fuzz Target: coderAVIFfuzzer Job Type: aflasangraphicsmagick Platform Id: linux Crash Type: Heap-buffer-overflow READ 4 Crash Addres...