# CVE-2026-56211: aom: A remote code execution vulnerability was found in libaom, the reference AV1 codec implementation CVE-2026-56211 is fixed in 10 products on 1 platform, first by aom-tools 3.3.0-1ubuntu0.1+esm1, released June 19, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-56211 - Priority: High - CVSS: 7.1 (high) - EPSS: 0.0088 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Jun 19, 2026 ## Description 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. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | SVT-AV1 sles 15.6 | 1.8.0-150600.3.2.5 | [SUSE-SU-2026:3224-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3224-1.md) | Jul 23, 2026 | | Linux | SVT-AV1 sles 15.7 | 1.8.0-150600.3.2.5 | [SUSE-SU-2026:3224-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3224-1.md) | Jul 23, 2026 | | Linux | aom Debian 12.15 (bookworm) | 3.6.0-1+deb12u3 | [DEBIAN-CVE-2026-56211](https://patchblox.com/security/data/fix/linux/debian-cve-2026-56211.md) | Jun 19, 2026 | | Linux | aom Debian 13.5 (trixie) | 3.12.1-1+deb13u1 | [DEBIAN-CVE-2026-56211](https://patchblox.com/security/data/fix/linux/debian-cve-2026-56211.md) | Jun 19, 2026 | | Linux | aom Debian 14 | 3.14.1-1 | [DEBIAN-CVE-2026-56211](https://patchblox.com/security/data/fix/linux/debian-cve-2026-56211.md) | Jun 19, 2026 | | Linux | aom-tools Ubuntu 22.04.1 LTS (jammy) | 3.3.0-1ubuntu0.1+esm1 | [aom-tools 3.3.0-1ubuntu0.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-aom-tools-3.3.0-1ubuntu0.1-esm1.md) | Jun 19, 2026 | | Linux | aom-tools Ubuntu 24.04.5 LTS (noble) | 3.8.2-2ubuntu0.2 | [aom-tools 3.8.2-2ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-aom-tools-3.8.2-2ubuntu0.2.md) | Jun 19, 2026 | | Linux | aom-tools Ubuntu 26.04.1 LTS (resolute) | 3.13.1-2ubuntu0.1 | [aom-tools 3.13.1-2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-aom-tools-3.13.1-2ubuntu0.1.md) | Jun 19, 2026 | | Linux | firefox amzn 2023 | 140.12.0-1.amzn2023.0.1 | [ALAS2023-2026-1928](https://patchblox.com/security/data/fix/linux/alas2023-2026-1928.md) | Jul 6, 2026 | | Linux | firefox-debuginfo amzn 2023 | 140.12.0-1.amzn2023.0.1 | [ALAS2023-2026-1928](https://patchblox.com/security/data/fix/linux/alas2023-2026-1928.md) | Jul 6, 2026 | | Linux | firefox-debugsource amzn 2023 | 140.12.0-1.amzn2023.0.1 | [ALAS2023-2026-1928](https://patchblox.com/security/data/fix/linux/alas2023-2026-1928.md) | Jul 6, 2026 | | Linux | libaom opensuse-leap 16.0 | 3.11.0-160000.3.1 | [OPENSUSE-SU-2026:21061-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21061-1.md) | Jun 25, 2026 | | Linux | libaom sles 15.6 | 3.7.1-150600.3.9.1 | [SUSE-SU-2026:3224-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3224-1.md) | Jul 23, 2026 | | Linux | libaom sles 15.7 | 3.7.1-150600.3.9.1 | [SUSE-SU-2026:3224-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3224-1.md) | Jul 23, 2026 | | Linux | libaom sles 16.0 | 3.11.0-160000.3.1 | [SUSE-SU-2026:22369-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-22369-1.md) | Jun 25, 2026 | | Linux | libaom-devel-doc opensuse-leap 16.0 | 3.11.0-160000.3.1 | [OPENSUSE-SU-2026:21061-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21061-1.md) | Jun 25, 2026 | | Linux | libaom-devel-doc sles 15.6 | 3.7.1-150600.3.9.3 | [SUSE-SU-2026:3224-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3224-1.md) | Jul 23, 2026 | | Linux | libaom-devel-doc sles 15.7 | 3.7.1-150600.3.9.3 | [SUSE-SU-2026:3224-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3224-1.md) | Jul 23, 2026 | | Linux | libaom3 Ubuntu 22.04.1 LTS (jammy) | 3.3.0-1ubuntu0.1+esm1 | [libaom3 3.3.0-1ubuntu0.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libaom3-3.3.0-1ubuntu0.1-esm1.md) | Jun 19, 2026 | | Linux | libaom3 Ubuntu 24.04.5 LTS (noble) | 3.8.2-2ubuntu0.2 | [libaom3 3.8.2-2ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libaom3-3.8.2-2ubuntu0.2.md) | Jun 19, 2026 | | Linux | libaom3 Ubuntu 26.04.1 LTS (resolute) | 3.13.1-2ubuntu0.1 | [libaom3 3.13.1-2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libaom3-3.13.1-2ubuntu0.1.md) | Jun 19, 2026 | | Linux | libyuv sles 15.6 | 20230517+a377993-150600.3.4.2 | [SUSE-SU-2026:3224-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3224-1.md) | Jul 23, 2026 | | Linux | libyuv sles 15.7 | 20230517+a377993-150600.3.4.2 | [SUSE-SU-2026:3224-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3224-1.md) | Jul 23, 2026 | --- Data as of 2026-11-08T06:59:42Z UTC. 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