Vulnerability-Lookup

CVE-2026-56211 (GCVE-0-2026-56211)

Vulnerability from cvelistv5 – Published: 2026-06-19 16:28 – Updated: 2026-06-23 02:13

Title

Libaom: libaom: remote code execution via svc layer context handling with attacker-controlled frames

Summary

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.

Severity

7.1 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-787 - Out-of-bounds Write

Assigner

redhat

References

4 references

URL	Tags
https://access.redhat.com/security/cve/CVE-2026-56211	vdb-entryx_refsource_REDHAT
https://aomedia.googlesource.com/aom/+/a93ba0ffaa
https://bugzilla.redhat.com/show_bug.cgi?id=2490802	issue-trackingx_refsource_REDHAT
https://issues.chromium.org/issues/503993985

Impacted products

4 products

Vendor	Product	Version
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat Enterprise Linux AI (RHEL AI) 3	cpe:/a:redhat:enterprise_linux_ai:3
Red Hat	Red Hat Hardened Images	cpe:/a:redhat:hummingbird:1

Date Public

2026-06-19 00:00

Credits

Red Hat would like to thank The FuzzAnything Team (FuzzAnything) for reporting this issue.

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-56211

Vulnerability from fkie_nvd - Published: 2026-06-19 17:16 - Updated: 2026-06-19 18:16

Severity

7.1 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:H

Summary

References

	URL	Tags
	secalert@redhat.com	https://access.redhat.com/security/cve/CVE-2026-56211
	secalert@redhat.com	https://aomedia.googlesource.com/aom/+/a93ba0ffaa
	secalert@redhat.com	https://bugzilla.redhat.com/show_bug.cgi?id=2490802
	secalert@redhat.com	https://issues.chromium.org/issues/503993985

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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  "lastModified": "2026-06-19T18:16:20.350",
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GHSA-QR4P-J2PF-4W4X

Vulnerability from github – Published: 2026-06-19 18:32 – Updated: 2026-06-19 18:32

Details

Severity

7.1 (High)


                  
                    CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:H

Show details on source website

JSON

To clipboard

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  "affected": [],
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  ],
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    "github_reviewed": false,
    "github_reviewed_at": null,
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    "severity": "HIGH"
  },
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  "id": "GHSA-qr4p-j2pf-4w4x",
  "modified": "2026-06-19T18:32:34Z",
  "published": "2026-06-19T18:32:34Z",
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    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56211"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-56211"
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    {
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    },
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    },
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      "url": "https://issues.chromium.org/issues/503993985"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2026-56211 (GCVE-0-2026-56211)

FKIE_CVE-2026-56211

GHSA-QR4P-J2PF-4W4X

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