CVE-2026-7477: CWE-416 Use After Free in Arm Ltd Bifrost GPU Kernel Driver
Description
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 v3.1
Score 7.8high
Affected software
Arm Ltd
Bifrost GPU Kernel Driver
Arm Ltd
Valhall GPU Kernel Driver
Arm Ltd
Arm 5th Gen GPU Architecture Kernel Driver
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-7477) involves a Use After Free condition in Arm Ltd's Bifrost GPU Kernel Driver, Valhall GPU Kernel Driver, and Arm 5th Gen GPU Architecture Kernel Driver. A local non-privileged user process can exploit this flaw by performing valid GPU memory processing operations that access memory regions that have already been freed, potentially leading to system compromise. The affected versions include Bifrost GPU Kernel Driver from r44p0 through r49p4, r50p0 through r51p0, and r54p1 through r54p2; Valhall GPU Kernel Driver from r44p0 through r49p5 and r50p0 through r54p3; and Arm 5th Gen GPU Architecture Kernel Driver from r44p0 through r49p5, r50p0 through r54p3, and r55p0.
Potential Impact
The vulnerability allows a local non-privileged user to access freed memory via GPU operations, which can lead to high impact on confidentiality, integrity, and availability of the affected system. This could potentially allow unauthorized data access or system instability.
Mitigation Recommendations
No patch or remediation information is provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Arm
- Date Reserved
- 2026-04-29T22:26:00.556Z
- State
- PUBLISHED
Threat ID: 6aa01dbcacd9273b49c8372e
Added to database: 09/08/2026, 14:37:48 UTC
Last enriched: 09/16/2026, 01:37:18 UTC
Last updated: 10/23/2026, 15:10:15 UTC
Views: 63
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