{"id":"DEBIAN-CVE-2026-56210","details":"A heap-buffer-overflow read vulnerability was found in libaom, the reference AV1 codec implementation. A missing bounds check in the SVC (Scalable Video Coding) layer ID control function allows setting a spatial_layer_id exceeding the configured number of layers. This causes an out-of-bounds heap read of approximately 40,728 bytes when computing a layer context array index. An attacker who can influence SVC encoder parameters in a network-facing service could exploit this for information disclosure (heap content leak) or denial of service (segmentation fault from hitting unmapped memory).","modified":"2026-09-25T08:47:31.854967963Z","published":"2026-06-19T17:16:30.557Z","upstream":["CVE-2026-56210"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-56210"}],"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-2026-56210.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-2026-56210.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-2026-56210.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:N/A:H"}]}