# CVE-2026-56210: aom: A heap-buffer-overflow read vulnerability was found in libaom, the reference AV1 codec implementation CVE-2026-56210 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-2026-56210 - Priority: High - CVSS: 7.1 (high) - EPSS: 0.0058 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Jun 19, 2026 ## Description 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). ## 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-2026-56210](https://patchblox.com/security/data/fix/linux/debian-cve-2026-56210.md) | Jun 19, 2026 | | Linux | aom Debian 13.5 (trixie) | 3.12.1-1+deb13u1 | [DEBIAN-CVE-2026-56210](https://patchblox.com/security/data/fix/linux/debian-cve-2026-56210.md) | Jun 19, 2026 | | Linux | aom Debian 14 | 3.14.1-1 | [DEBIAN-CVE-2026-56210](https://patchblox.com/security/data/fix/linux/debian-cve-2026-56210.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 2026-11-08T13:06:02Z UTC. 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