{"id":"DEBIAN-CVE-2026-47251","details":"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Version 1.22.0 patches the issue.","modified":"2026-08-06T14:00:36.942481493Z","published":"2026-07-21T22:17:12.800Z","withdrawn":"2026-08-06T14:00:36.942481354Z","upstream":["CVE-2026-47251"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-47251"}],"affected":[{"package":{"name":"libheif","ecosystem":"Debian:11","purl":"pkg:deb/debian/libheif?arch=source&distro=bullseye"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.11.0-1","1.11.0-1+deb11u1","1.11.0-1+deb11u2","1.12.0-1","1.12.0-2","1.13.0-1","1.14.2-1","1.15.1-1","1.16.2-1","1.16.2-2","1.16.2-3","1.17.0-1","1.17.1-1","1.17.4-1","1.17.6-1","1.17.6-2","1.17.6-3","1.17.6-4","1.18.1-1","1.18.1-2","1.18.2-1","1.18.2-2","1.19.1-1","1.19.1-1~bpo12+1","1.19.1-1~bpo12+2","1.19.3-1","1.19.3-1~bpo12+1","1.19.5-1","1.19.7-1","1.19.7-1~bpo12+1","1.19.8-1","1.20.1-1","1.20.2-1","1.20.2-2","1.21.2-1","1.21.2-2","1.21.2-3","1.21.2-4","1.23.1-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-47251.json"}},{"package":{"name":"libheif","ecosystem":"Debian:12","purl":"pkg:deb/debian/libheif?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.15.1-1","1.15.1-1+deb12u1","1.16.2-1","1.16.2-2","1.16.2-3","1.17.0-1","1.17.1-1","1.17.4-1","1.17.6-1","1.17.6-2","1.17.6-3","1.17.6-4","1.18.1-1","1.18.1-2","1.18.2-1","1.18.2-2","1.19.1-1","1.19.1-1~bpo12+1","1.19.1-1~bpo12+2","1.19.3-1","1.19.3-1~bpo12+1","1.19.5-1","1.19.7-1","1.19.7-1~bpo12+1","1.19.8-1","1.20.1-1","1.20.2-1","1.20.2-2","1.21.2-1","1.21.2-2","1.21.2-3","1.21.2-4","1.23.1-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-47251.json"}},{"package":{"name":"libheif","ecosystem":"Debian:13","purl":"pkg:deb/debian/libheif?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.19.8-1","1.20.1-1","1.20.2-1","1.20.2-2","1.21.2-1","1.21.2-2","1.21.2-3","1.21.2-4","1.23.1-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-47251.json"}},{"package":{"name":"libheif","ecosystem":"Debian:14","purl":"pkg:deb/debian/libheif?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.19.8-1","1.20.1-1","1.20.2-1","1.20.2-2","1.21.2-1","1.21.2-2","1.21.2-3","1.21.2-4","1.23.1-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-47251.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H"}]}