UBUNTU-CVE-2026-56208

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Source
https://ubuntu.com/security/CVE-2026-56208
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56208.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-56208
Upstream
  • CVE-2026-56208
Published
2026-06-19T17:16:00Z
Modified
2026-06-24T11:02:03.337855148Z
Severity
  • 7.6 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
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 glagin_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.

References

Affected packages

Ubuntu:20.04:LTS / aom

Package

Name
aom
Purl
pkg:deb/ubuntu/aom?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.0.0-3
1.0.0.errata1-2
1.0.0.errata1-2ubuntu3
1.0.0.errata1-3
1.0.0.errata1-3build1
1.0.0.errata1-3+deb11u1build0.20.04.1
1.0.0.errata1-3+deb11u1ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "aom-tools",
            "binary_version": "1.0.0.errata1-3+deb11u1ubuntu0.1"
        },
        {
            "binary_name": "libaom0",
            "binary_version": "1.0.0.errata1-3+deb11u1ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56208.json"

Ubuntu:22.04:LTS / aom

Package

Name
aom
Purl
pkg:deb/ubuntu/aom?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.0.0.errata1-3build1
3.*
3.2.0-2
3.3.0-1
3.3.0-1ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "aom-tools",
            "binary_version": "3.3.0-1ubuntu0.1"
        },
        {
            "binary_name": "libaom3",
            "binary_version": "3.3.0-1ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56208.json"

Ubuntu:24.04:LTS / aom

Package

Name
aom
Purl
pkg:deb/ubuntu/aom?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.6.1-1
3.7.0-1
3.7.1-1
3.8.1-1
3.8.2-2build1
3.8.2-2ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "aom-tools",
            "binary_version": "3.8.2-2ubuntu0.1"
        },
        {
            "binary_name": "libaom3",
            "binary_version": "3.8.2-2ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56208.json"

Ubuntu:25.10 / aom

Package

Name
aom
Purl
pkg:deb/ubuntu/aom?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.12.0-1
3.12.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "aom-tools",
            "binary_version": "3.12.1-1"
        },
        {
            "binary_name": "libaom3",
            "binary_version": "3.12.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56208.json"

Ubuntu:26.04:LTS / aom

Package

Name
aom
Purl
pkg:deb/ubuntu/aom?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.12.1-1
3.13.1-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "aom-tools",
            "binary_version": "3.13.1-2"
        },
        {
            "binary_name": "libaom3",
            "binary_version": "3.13.1-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56208.json"