CVE-2026-7477

Use After Free vulnerability in Arm Ltd Bifrost GPU Kernel Driver, Arm Ltd Valhall GPU Kernel Driver, Arm Ltd Arm 5th Gen GPU Architecture Kernel Driver allows a local non-privileged user process to perform valid GPU memory processing operations to access already freed memory. This issue affects Bifrost GPU Kernel Driver: from r44p0 through r49p4, from r50p0 through r51p0, from r54p1 through r54p2; Valhall GPU Kernel Driver: from r44p0 through r49p5, from r50p0 through r54p3; Arm 5th Gen GPU Architecture Kernel Driver: from r44p0 through r49p5, from r50p0 through r54p3, r55p0.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://support.arm.com/documentation/111552/1-0/?lang=en

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-08 15:18

Updated : 2026-09-10 19:17

NVD link : CVE-2026-7477

Mitre link : CVE-2026-7477

CVE.ORG link : CVE-2026-7477

JSON object : View

Products Affected

No product.

CWE

CWE-416

Use After Free

{"id": "CVE-2026-7477", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-7477", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-09-10T18:04:38.446600Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "affected": [{"source": "arm-security@arm.com", "affectedData": [{"vendor": "Arm Ltd", "product": "Bifrost GPU Kernel Driver", "versions": [{"status": "affected", "version": "r44p0", "versionType": "patch", "lessThanOrEqual": "r49p4"}, {"status": "affected", "version": "r50p0", "versionType": "patch", "lessThanOrEqual": "r51p0"}, {"status": "affected", "version": "r54p1", "versionType": "patch", "lessThanOrEqual": "r54p2"}], "defaultStatus": "unaffected"}, {"vendor": "Arm Ltd", "product": "Valhall GPU Kernel Driver", "versions": [{"status": "affected", "version": "r44p0", "versionType": "patch", "lessThanOrEqual": "r49p5"}, {"status": "affected", "changes": [{"at": "r56p0", "status": "unaffected"}], "version": "r50p0", "versionType": "patch", "lessThanOrEqual": "r54p3"}], "defaultStatus": "unaffected"}, {"vendor": "Arm Ltd", "product": "Arm 5th Gen GPU Architecture Kernel Driver", "versions": [{"status": "affected", "version": "r44p0", "versionType": "patch", "lessThanOrEqual": "r49p5"}, {"status": "affected", "version": "r50p0", "versionType": "patch", "lessThanOrEqual": "r54p3"}, {"status": "affected", "version": "r55p0", "versionType": "patch"}, {"status": "unaffected", "version": "r56p0", "versionType": "patch"}], "defaultStatus": "unaffected"}]}], "published": "2026-09-08T15:18:48.873", "references": [{"url": "https://support.arm.com/documentation/111552/1-0/?lang=en", "source": "arm-security@arm.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "arm-security@arm.com", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "Use After Free vulnerability in Arm Ltd Bifrost GPU Kernel Driver, Arm Ltd Valhall GPU Kernel Driver, Arm Ltd Arm 5th Gen GPU Architecture Kernel Driver allows a local non-privileged user process to perform valid GPU memory processing operations to access already freed memory.\n\n\n\nThis issue affects Bifrost GPU Kernel Driver: from r44p0 through r49p4, from r50p0 through r51p0, from r54p1 through r54p2; Valhall GPU Kernel Driver: from r44p0 through r49p5, from r50p0 through r54p3; Arm 5th Gen GPU Architecture Kernel Driver: from r44p0 through r49p5, from r50p0 through r54p3, r55p0."}], "lastModified": "2026-09-10T19:17:35.373", "sourceIdentifier": "arm-security@arm.com"}