{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-11891", "assignerOrgId": "56a131ea-b967-4a0d-a41e-5f3549952846", "state": "PUBLISHED", "assignerShortName": "Arm", "dateReserved": "2026-06-10T15:09:29.899Z", "datePublished": "2026-09-08T14:21:40.739Z", "dateUpdated": "2026-09-08T14:21:40.739Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "56a131ea-b967-4a0d-a41e-5f3549952846", "shortName": "Arm", "dateUpdated": "2026-09-08T14:21:40.739Z"}, "title": "Mali GPU Userspace Driver allows access to already freed memory", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-416", "description": "CWE-416 Use After Free", "type": "CWE"}]}], "affected": [{"vendor": "Arm Ltd", "product": "Valhall GPU Userspace Driver", "versions": [{"status": "affected", "version": "r46p0", "lessThanOrEqual": "r49p5", "versionType": "patch"}, {"status": "affected", "version": "r50p0", "lessThanOrEqual": "r54p3", "versionType": "patch"}, {"status": "affected", "version": "r55p0", "versionType": "patch"}, {"status": "unaffected", "version": "r56p0", "versionType": "patch"}], "defaultStatus": "unaffected"}, {"vendor": "Arm Ltd", "product": "Arm 5th Gen GPU Architecture Userspace Driver", "versions": [{"status": "affected", "version": "r46p0", "lessThanOrEqual": "r49p5", "versionType": "patch"}, {"status": "affected", "version": "r50p0", "lessThanOrEqual": "r54p3", "versionType": "patch"}, {"status": "affected", "version": "r55p0", "versionType": "patch"}, {"status": "unaffected", "version": "r56p0", "versionType": "patch"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "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.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>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.</p><p>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.</p>"}]}], "references": [{"url": "https://support.arm.com/documentation/111552/1-0/?lang=en"}], "solutions": [{"lang": "en", "value": "This issue has been fixed in the following versions: Valhall GPU Userspace Driver: r56p0; Arm 5th Gen GPU Architecture Userspace Driver: r56p0. Arm partners are recommended to upgrade to the latest applicable version as soon as possible.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>This issue has been fixed in the following versions: Valhall GPU Userspace Driver: r56p0; Arm 5th Gen GPU Architecture Userspace Driver: r56p0. Arm partners are recommended to upgrade to the latest applicable version as soon as possible.</p>"}]}], "credits": [{"lang": "en", "value": "Anymous", "type": "finder"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 1.0.5"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Valhall GPU Userspace Driver", "vendor": "Arm Ltd", "versions": [{"lessThanOrEqual": "r49p5", "status": "affected", "version": "r46p0", "versionType": "patch"}, {"lessThanOrEqual": "r54p3", "status": "affected", "version": "r50p0", "versionType": "patch"}, {"status": "affected", "version": "r55p0", "versionType": "patch"}, {"status": "unaffected", "version": "r56p0", "versionType": "patch"}]}, {"defaultStatus": "unaffected", "product": "Arm 5th Gen GPU Architecture Userspace Driver", "vendor": "Arm Ltd", "versions": [{"lessThanOrEqual": "r49p5", "status": "affected", "version": "r46p0", "versionType": "patch"}, {"lessThanOrEqual": "r54p3", "status": "affected", "version": "r50p0", "versionType": "patch"}, {"status": "affected", "version": "r55p0", "versionType": "patch"}, {"status": "unaffected", "version": "r56p0", "versionType": "patch"}]}], "source": "arm-security@arm.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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": "CVE-2026-11891", "lastModified": "2026-09-08T15:24:07.790", "metrics": {}, "published": "2026-09-08T15:18:40.067", "references": [{"source": "arm-security@arm.com", "url": "https://support.arm.com/documentation/111552/1-0/?lang=en"}], "sourceIdentifier": "arm-security@arm.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "arm-security@arm.com", "type": "Secondary"}]}

{}

{"created": "2026-09-08T16:00:15.218349+00:00", "updated": "2026-09-08T16:00:15.218355+00:00", "vendors": []}