CVE-2026-49271 libheif: Wrapped icef compressed-unit range check causes out-of-bounds read in uncompressed HEIF decoder

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...

CVE-2025-38688

CVE-2025-38688: In the Linux kernel’s iommufd code, ALIGN() overflow could occur while allocating IOVA ranges near ULONG_MAX, risking overlapping mappings or mapping against reserved ranges. The fix uses get_add_overflow() to guard ALIGN() and consolidates the checks under a single helper. Public...