CVE-2026-84384
highlibheif is a HEIF and AVIF file format decoder and encoder.
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/strukturag/libheif/commit/21893e8f66c8b79363ca2809391b07d35e1a95ec security-advisories@github.com
- https://github.com/strukturag/libheif/releases/tag/v1.23.2 security-advisories@github.com
- https://github.com/strukturag/libheif/security/advisories/GHSA-24wx-9w62-c96w security-advisories@github.com
- https://github.com/strukturag/libheif/security/advisories/GHSA-24wx-9w62-c96w 134c704f-9b21-4f2e-91b3-4a467353bcc0