Vulnerability-Lookup

CVE-2026-11891 (GCVE-0-2026-11891)

Vulnerability from cvelistv5 – Published: 2026-09-08 14:21 – Updated: 2026-09-10 18:28

Title

Mali GPU Userspace Driver allows access to already freed memory

Summary

Use After Free vulnerability in Arm Ltd Valhall GPU Userspace Driver, Arm Ltd Arm 5th Gen GPU Architecture Userspace Driver allows a non-privileged user process to perform valid GPU processing operations, including via WebGL or WebGPU, to access already freed memory. This issue affects Valhall GPU Userspace Driver: from r46p0 through r49p5, from r50p0 through r54p3, r55p0; Arm 5th Gen GPU Architecture Userspace Driver: from r46p0 through r49p5, from r50p0 through r54p3, r55p0.

Severity

5.1 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-10 18:28 UTC

CWE

CWE-416 - Use After Free

Assigner

Arm mitre root

References

1 reference

URL	Tags
https://support.arm.com/documentation/111552/1-0/…

Impacted products

2 products

Vendor	Product	Version	CPE status
Arm Ltd	Valhall GPU Userspace Driver	Affected: r46p0 , ≤ r49p5 (patch) Affected: r50p0 , ≤ r54p3 (patch) Affected: r55p0 (patch) Unaffected: r56p0 (patch)	guessed
Arm Ltd	Arm 5th Gen GPU Architecture Userspace Driver	Affected: r46p0 , ≤ r49p5 (patch) Affected: r50p0 , ≤ r54p3 (patch) Affected: r55p0 (patch) Unaffected: r56p0 (patch)	guessed

Credits

Anymous

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-11891

Vulnerability from fkie_nvd - Published: 2026-09-08 15:18 - Updated: 2026-09-10 19:17

Severity

5.1 (Medium) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Summary

References

	URL	Tags
	arm-security@arm.com	https://support.arm.com/documentation/111552/1-0/?lang=en

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Valhall GPU Userspace Driver",
          "vendor": "Arm Ltd",
          "versions": [
            {
              "lessThanOrEqual": "r49p5",
              "status": "affected",
              "version": "r46p0",
              "versionType": "patch"
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              "lessThanOrEqual": "r54p3",
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              "version": "r50p0",
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            },
            {
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              "version": "r55p0",
              "versionType": "patch"
            },
            {
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              "version": "r56p0",
              "versionType": "patch"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Arm 5th Gen GPU Architecture Userspace Driver",
          "vendor": "Arm Ltd",
          "versions": [
            {
              "lessThanOrEqual": "r49p5",
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            {
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            },
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              "version": "r56p0",
              "versionType": "patch"
            }
          ]
        }
      ],
      "source": "arm-security@arm.com"
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      "lang": "en",
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    }
  ],
  "id": "CVE-2026-11891",
  "lastModified": "2026-09-10T19:17:26.660",
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        "cvssData": {
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GHSA-V44F-6G2R-3454

Vulnerability from github – Published: 2026-09-08 15:31 – Updated: 2026-09-10 21:31

Details

This issue affects Valhall GPU Userspace Driver: from r46p0 through r49p5, from r50p0 through r54p3, r55p0; Arm 5th Gen GPU Architecture Userspace Driver: from r46p0 through r49p5, from r50p0 through r54p3, r55p0.

Severity

5.1 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-11891"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-08T15:18:40Z",
    "severity": "MODERATE"
  },
  "details": "Use After Free vulnerability in Arm Ltd Valhall GPU Userspace Driver, Arm Ltd Arm 5th Gen GPU Architecture Userspace Driver allows a non-privileged user process to perform valid GPU processing operations, including via WebGL or WebGPU, to access already freed memory.\n\n\n\nThis issue affects Valhall GPU Userspace Driver: from r46p0 through r49p5, from r50p0 through r54p3, r55p0; Arm 5th Gen GPU Architecture Userspace Driver: from r46p0 through r49p5, from r50p0 through r54p3, r55p0.",
  "id": "GHSA-v44f-6g2r-3454",
  "modified": "2026-09-10T21:31:20Z",
  "published": "2026-09-08T15:31:56Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-11891"
    },
    {
      "type": "WEB",
      "url": "https://support.arm.com/documentation/111552/1-0/?lang=en"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
      "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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-11891 (GCVE-0-2026-11891)

FKIE_CVE-2026-11891

GHSA-V44F-6G2R-3454

Tags

Sightings

Nomenclature