CVE-2026-84384
libheif is a HEIF and AVIF file format decoder and encoder.
Impact
libheif is a HEIF and AVIF file format decoder and encoder. From 1.19.0 until 1.23.2, crafted HEIF or AVIF mime metadata and unci image data can cause decompress_brotli() and do_inflate() to grow accumulated output without an effective size limit or MemoryHandle accounting. The brotli path has no output bound, while the zlib path checks only a small temporary buffer in a branch that valid streams do not reach, and overlapping icef units can decompress the same payload repeatedly. HeifContext::interpret_heif_file_images() processes multiple compressed metadata items during file opening, allowing a small file to consume unbounded memory and terminate the process. This issue is fixed in version 1.23.2.
Affected packages
This record carries no package version data, so it cannot be matched against a dependency list automatically. Read the advisory and compare your version by hand.
Weakness classification
References
- NVD record
- CVE.org record
- https://github.com/strukturag/libheif/commit/21893e8f66c8b79363ca2809391b07d35e1a95ec
- https://github.com/strukturag/libheif/releases/tag/v1.23.2
- https://github.com/strukturag/libheif/security/advisories/GHSA-24wx-9w62-c96w
- https://github.com/strukturag/libheif/security/advisories/GHSA-24wx-9w62-c96w