Libaom: libaom: heap buffer overflow in av1 encoder first-pass stats buffer via lap mode_CVE-2026-56208

{
    "lastseen": "",
    "description": "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.",
    "published": "2026-06-19T16:28:26.466Z",
    "modified": "2026-06-19T16:28:26.466Z",
    "type": "cve",
    "title": "Libaom: libaom: heap buffer overflow in av1 encoder first-pass stats buffer via lap mode",
    "source": "redhat",
    "references": "https://access.redhat.com/security/cve/CVE-2026-56208\nhttps://aomedia.googlesource.com/aom/+/243f8ae84b\nhttps://bugzilla.redhat.com/show_bug.cgi?id=2490799\nhttps://issues.chromium.org/issues/504317456",
    "id": "CVE-2026-56208",
    "bulletinFamily": "",
    "cwe": [
        "CWE-122"
    ],
    "cvelist": null,
    "sourceData": "",
    "sourceHref": "",
    "cvss": {
        "score": 8.6,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H",
        "version": "3.1"
    },
    "cvss2": [],
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        "baseScore": 0,
        "baseSeverity": "",
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        "privilegesRequired": "",
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        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
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    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Red Hat Enterprise Linux 10",
    "version": "",
    "vendor": "Red Hat",
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    "ai_score": 0
}