CVE-2026-84384
published 2026-09-18CVE-2026-84384: 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…
PriorityP344high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.52%
42.7th percentile
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
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| strukturag | libheif | — | — |
| ubuntu | libheif | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
vendor_ubuntu7.5HIGH
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-84384 libheif: libheif: Denial of Service due to unbounded memory consumption via crafted HEIF/AVIF files [epel-10]
bugzilla·2026-09-23·CVSS 7.5
CVE-2026-84384 [HIGH] CVE-2026-84384 libheif: libheif: Denial of Service due to unbounded memory consumption via crafted HEIF/AVIF files [epel-10]
CVE-2026-84384 libheif: libheif: Denial of Service due to unbounded memory consumption via crafted HEIF/AVIF files [epel-10]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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 deco
Bugzilla
CVE-2026-84384 libheif: libheif: Denial of Service due to unbounded memory consumption via crafted HEIF/AVIF files [fedora-43]
bugzilla·2026-09-23·CVSS 7.5
CVE-2026-84384 [HIGH] CVE-2026-84384 libheif: libheif: Denial of Service due to unbounded memory consumption via crafted HEIF/AVIF files [fedora-43]
CVE-2026-84384 libheif: libheif: Denial of Service due to unbounded memory consumption via crafted HEIF/AVIF files [fedora-43]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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 de
2026-09-18
Published