{"id":"DEBIAN-CVE-2026-56208","details":"A heap buffer overflow vulnerability was found in libaom, the reference AV1 codec implementation. A flaw in the AV1 encoder's Look-Ahead Processing (LAP) mode causes the first-pass stats ring buffer wrap-around guard to be bypassed when g_lag_in_frames is set to 1 or higher. This results in a 232-byte out-of-bounds write on every encoded frame after the second, corrupting adjacent heap objects. An attacker who can influence encoder configuration in a transcoding service or WebRTC session could exploit this to cause a denial of service (process crash) or potentially achieve code execution.","modified":"2026-09-25T08:47:22.529112437Z","published":"2026-06-19T17:16:30.297Z","upstream":["CVE-2026-56208"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-56208"}],"affected":[{"package":{"name":"aom","ecosystem":"Debian:12","purl":"pkg:deb/debian/aom?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.6.0-1+deb12u3"}]}],"versions":["3.6.0-1","3.6.0-1+deb12u1","3.6.0-1+deb12u2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-56208.json"}},{"package":{"name":"aom","ecosystem":"Debian:13","purl":"pkg:deb/debian/aom?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.12.1-1+deb13u1"}]}],"versions":["3.12.1-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-56208.json"}},{"package":{"name":"aom","ecosystem":"Debian:14","purl":"pkg:deb/debian/aom?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.14.1-1"}]}],"versions":["3.12.1-1","3.13.1-1","3.13.1-1~exp1","3.13.1-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-56208.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H"}]}