CVE-2026-49271

libheif is a HEIF and AVIF file format decoder and encoder. Prior to version 1.22.1, the uncompressed HEIF decoder validates explicit icef compressed-unit offsets using unitoffset + unitsize. Because the addition can wrap, a crafted HEIF file can pass the range check and then construct a vector...

CVE-2026-49271

CVE-2026-49271 affects libheif prior to 1.22.1. The uncompressed HEIF decoder validates icef compressed-unit offsets with unit_offset + unit_size, which can wrap and allow constructing iterators outside the compressed item buffer, causing an out-of-bounds heap read and crash. This vulnerability i...

Libheif uncompressed codec lacks bounds check leading to application crash

Overview An out-of-bounds memory access vulnerability exists in the uncompressed decoder component of libheif. A maliciously crafted HEIF image can trigger a denial-of-service condition by causing the libheif library to crash or exhibit other unexpected behavior due to an out-of-bounds memory...