aom — security advisory
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).
- Products
- aom
- Affected versions
- 3.12.1-1, 3.13.1-1, 3.13.1-1~exp1, 3.13.1-2, 3.6.0-1, 3.6.0-1+deb12u1, 3.6.0-1+deb12u2
- Fixed versions
- 3.12.1-1+deb13u1, 3.14.1-1, 3.6.0-1+deb12u3
- CVEs
- CVE-2026-56210
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 23:22 UTC · Revision 1
Source evidence
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).
osv:DEBIAN-CVE-2026-56210
aom
Fixed versions: 3.6.0-1+deb12u3
aom
Fixed versions: 3.12.1-1+deb13u1
aom
Fixed versions: 3.14.1-1
Complete source record
{
"id": "572f82f39c8b95e1b427fb26f636b727d24a990b3c7a4ea3cf3ef6bbb04fea88",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-56210",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-56210",
"summary": "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).",
"evidence": "osv:DEBIAN-CVE-2026-56210",
"products": [
{
"name": {
"value": "aom",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.6.0-1+deb12u3",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "3.6.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.6.0-1+deb12u1",
"evidence": "/affected/0/versions"
},
{
"value": "3.6.0-1+deb12u2",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "aom",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
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"evidence": "/affected/1/ranges"
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"affected_versions": [
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"evidence": "/affected/1/versions"
}
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},
{
"name": {
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"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
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"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "3.12.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.13.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.13.1-1~exp1",
"evidence": "/affected/2/versions"
},
{
"value": "3.13.1-2",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2026-56210",
"aliases": [
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],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.6.0-1+deb12u3"
}
]
}
],
"package": {
"name": "aom",
"purl": "pkg:deb/debian/aom?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
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"3.6.0-1+deb12u1",
"3.6.0-1+deb12u2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-56210.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
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{
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}
],
"package": {
"name": "aom",
"purl": "pkg:deb/debian/aom?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"3.12.1-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-56210.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
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},
{
"fixed": "3.14.1-1"
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],
"package": {
"name": "aom",
"purl": "pkg:deb/debian/aom?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"3.12.1-1",
"3.13.1-1",
"3.13.1-1~exp1",
"3.13.1-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-56210.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-23T17:47:42.070327713Z",
"provider": "osv",
"upstream": [
"CVE-2026-56210"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-56210"
]
},
"related_cves": [
{
"value": "CVE-2026-56210",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 418428,
"published_at": "2026-06-19T17:16:30.557+00:00"
}