https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-09-29T22:58:07.986334+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/cve-2026-47251 CVE-2026-47251 — libheif has an incomplete fix for CVE-2026-3949: integer overflow bypass in vvdec_push_data2 2026-09-29T22:58:07.990469+00:00

Affected: strukturag libheif

libheif is a HEIF and AVIF file format decoder and encoder. The fix for CVE-2026-3949 (commit `b97c8b5`, PR #1712) introduced an integer overflow in the very security check it added. The check itself can be bypassed, allowing a crafted HEIF file with a VVC track to trigger the same out-of-bounds heap read that CVE-2026-3949 was meant to prevent. This is a separate, currently-unpatched vulnerability. Issue #1712 was closed as fixed without testing the edge case where `size` is near `UINT32_MAX`. Version 1.22.0 patches the issue.