UBUNTU-CVE-2026-56211

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Source
https://ubuntu.com/security/CVE-2026-56211
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56211.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-56211
Upstream
  • CVE-2026-56211
Published
2026-06-19T17:16:00Z
Modified
2026-06-24T11:01:47.509356179Z
Severity
  • 7.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A remote code execution vulnerability was found in libaom, the reference AV1 codec implementation. Insufficient bounds validation in the AV1 encoder's SVC (Scalable Video Coding) layer ID control allows an attacker to supply crafted video frame pixels that overlap with internal encoder layer context structures. In fork-based video processing services, an attacker can use this to hijack the cyclic refresh map pointer, brute-force the process base address via a crash oracle, and redirect control flow to achieve arbitrary command execution. Exploitation requires the target service to use libaom with SVC encoding enabled and accept attacker-supplied video frames.

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-2026-56211.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-2026-56211.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-2026-56211.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-2026-56211.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-2026-56211.json"