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[USN-8772-1] AOM vulnerabilities

Posted on 16 September 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8772-1
September 16, 2026

aom vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 26.04 LTS
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS

Summary:

Several security issues were fixed in AOM.

Software Description:
- aom: AV1 Video Codec Library

Details:

It was discovered that AOM incorrectly handled the first-pass statistics
buffer in Look-Ahead Processing (LAP) mode. An attacker could possibly use
this issue to cause a heap buffer overflow, leading to a denial of service
or possibly execute arbitrary code. (CVE-2026-56208)

It was discovered that AOM incorrectly validated spatial and temporal
layer IDs in the SVC (Scalable Video Coding) encoder controls. An attacker
could possibly use this issue to write to an arbitrary memory address, read
out-of-bounds heap memory, or execute arbitrary code. (CVE-2026-56209,
CVE-2026-56210, CVE-2026-56211)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 26.04 LTS
aom-tools 3.13.1-2ubuntu0.1
libaom-dev 3.13.1-2ubuntu0.1
libaom3 3.13.1-2ubuntu0.1

Ubuntu 24.04 LTS
aom-tools 3.8.2-2ubuntu0.2
libaom-dev 3.8.2-2ubuntu0.2
libaom3 3.8.2-2ubuntu0.2

Ubuntu 22.04 LTS
aom-tools 3.3.0-1ubuntu0.1+esm1
Available with Ubuntu Pro
libaom-dev 3.3.0-1ubuntu0.1+esm1
Available with Ubuntu Pro
libaom3 3.3.0-1ubuntu0.1+esm1
Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-8772-1
CVE-2026-56208, CVE-2026-56209, CVE-2026-56210, CVE-2026-56211

Package Information:
https://launchpad.net/ubuntu/+source/aom/3.13.1-2ubuntu0.1
https://launchpad.net/ubuntu/+source/aom/3.8.2-2ubuntu0.2

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