7.5
High
CVE-2026-84384 libheif is a HEIF and AVIF file format decoder and encoder
Description
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 products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| libheif 1.19 | 1.19.0 → < 1.23.2 | 1.23.2 |
Other CVEs of libheif
The 34 CVEs of libheif →
CVE-2026-120208
libheif 1.18.0 before 1.23.3 contains a heap-based buffer overflow vulnerability in…
7.7
High
CVE-2026-84450
libheif is a HEIF and AVIF file format decoder and encoder
4.3
Medium
CVE-2026-84449
libheif is a HEIF and AVIF file format decoder and encoder
3.7
Low
CVE-2026-84451
libheif is a HEIF and AVIF file format decoder and encoder
6.5
Medium