CVE-2026-84447 — libheif: Derived-image indirect reference chains and tiled offsets bypass decode caching and MemoryHandle limits, cau…

CVE-2026-84447

libheif: Derived-image indirect reference chains and tiled offsets bypass decode caching and MemoryHandle limits, causing CPU/memory amplification DoS PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
strukturag / libheif	affected < 1.23.2

CWE

CWE-770

References

https://github.com/strukturag/libheif/security/advisories/GHSA-x8xm-cm2c-cfc8
https://github.com/strukturag/libheif/commit/30b52a4e829efe0ee6d7208e8500b99f664af5e9
https://github.com/strukturag/libheif/releases/tag/v1.23.2

ADP enrichment

CISA-ADP

No English description supplied.

https://github.com/strukturag/libheif/security/advisories/GHSA-x8xm-cm2c-cfc8