A heap buffer overflow vulnerability was found in libaom, the reference AV1 codec implementation. A flaw in the AV1 encoder's Look-Ahead Processing (LAP) mode causes the first-pass stats ring buffer wrap-around guard to be bypassed when g_lag_in_frames is set to 1 or higher. This results in a 232-byte out-of-bounds write on every encoded frame after the second, corrupting adjacent heap objects. An attacker who can influence encoder configuration in a transcoding service or WebRTC session could exploit this to cause a denial of service (process crash) or potentially achieve code execution.
References
Configurations
No configuration.
History
19 Oct 2026, 12:17
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06 Oct 2026, 03:17
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05 Oct 2026, 11:16
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02 Oct 2026, 02:17
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24 Sep 2026, 09:17
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22 Sep 2026, 13:17
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21 Sep 2026, 11:17
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Information
Published : 2026-06-19 17:16
Updated : 2026-10-19 12:17
NVD link : CVE-2026-56208
Mitre link : CVE-2026-56208
CVE.ORG link : CVE-2026-56208
JSON object : View
Products Affected
No product.
CWE
CWE-122
Heap-based Buffer Overflow
