CVE-2026-56210

CVE-2026-56210 · Libaom: libaom: heap-buffer-overflow read via missing bounds check in ctrl_set_layer_id

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This page shows selected source facts. See the linked advisories for the complete description and affected versions.

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).

CVSS 7.1 · High · EPSS 0.6% · Fix available

Published

2026-06-19T16:28:33.035Z

Updated

2026-10-19T11:20:52.907Z

Stack: system

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