CVE-2026-84447

Name	CVE-2026-84447
Description	libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.1 and earlier, crafted grid, iovl, and iden reference graphs can repeatedly decode the same base image because processed_ids is copied per branch and ImageItem::decode_image() has no shared operation budget. This vulnerability is fixed in 1.23.2.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
libheif (PTS)	bookworm, bookworm (security)	1.15.1-1+deb12u1	vulnerable
	trixie (security), trixie	1.19.8-1+deb13u1	vulnerable
	forky	1.23.3-1	fixed
	sid	1.23.4-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
libheif	source	(unstable)	1.23.2-1

Notes

https://github.com/strukturag/libheif/security/advisories/GHSA-x8xm-cm2c-cfc8
Fixed by: https://github.com/strukturag/libheif/commit/30b52a4e829efe0ee6d7208e8500b99f664af5e9 (v1.23.2)