CVE-2026-12387: CWE-416 Use After Free in Arm Ltd Bifrost GPU Kernel Driver
CVE-2026-12387 is a Use After Free vulnerability in multiple Arm Ltd GPU Kernel Drivers including Bifrost, Valhall, and Arm 5th Gen GPU Architecture. It allows a local non-privileged user process to access memory that has already been freed during GPU memory processing operations. The affected versions span several release ranges for each driver variant. No official patch or remediation guidance has been provided yet.
AI Analysis
Technical Summary
This vulnerability involves a Use After Free condition (CWE-416) in Arm Ltd's Bifrost, Valhall, and Arm 5th Gen GPU Kernel Drivers. A local non-privileged user process can exploit this flaw by performing valid GPU memory operations that result in accessing memory after it has been freed. The affected versions include Bifrost GPU Kernel Driver from r41p0 through r49p5, r50p0 through r51p0, and r54p1 through r54p2; Valhall GPU Kernel Driver from r41p0 through r49p5, r50p0 through r54p3, and r55p0; and Arm 5th Gen GPU Architecture Kernel Driver from r41p0 through r49p5, r50p0 through r54p3, and r55p0. No CVSS score or vendor remediation information is currently available.
Potential Impact
The vulnerability allows a local non-privileged user process to access freed memory in the GPU kernel drivers, which could lead to undefined behavior such as memory corruption or potential escalation of privileges within the local system context. However, no known exploits are reported in the wild, and the exact impact beyond memory access is not detailed.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround has been published by Arm Ltd at this time.
CVE-2026-12387: CWE-416 Use After Free in Arm Ltd Bifrost GPU Kernel Driver
Description
CVE-2026-12387 is a Use After Free vulnerability in multiple Arm Ltd GPU Kernel Drivers including Bifrost, Valhall, and Arm 5th Gen GPU Architecture. It allows a local non-privileged user process to access memory that has already been freed during GPU memory processing operations. The affected versions span several release ranges for each driver variant. No official patch or remediation guidance has been provided yet.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a Use After Free condition (CWE-416) in Arm Ltd's Bifrost, Valhall, and Arm 5th Gen GPU Kernel Drivers. A local non-privileged user process can exploit this flaw by performing valid GPU memory operations that result in accessing memory after it has been freed. The affected versions include Bifrost GPU Kernel Driver from r41p0 through r49p5, r50p0 through r51p0, and r54p1 through r54p2; Valhall GPU Kernel Driver from r41p0 through r49p5, r50p0 through r54p3, and r55p0; and Arm 5th Gen GPU Architecture Kernel Driver from r41p0 through r49p5, r50p0 through r54p3, and r55p0. No CVSS score or vendor remediation information is currently available.
Potential Impact
The vulnerability allows a local non-privileged user process to access freed memory in the GPU kernel drivers, which could lead to undefined behavior such as memory corruption or potential escalation of privileges within the local system context. However, no known exploits are reported in the wild, and the exact impact beyond memory access is not detailed.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround has been published by Arm Ltd at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Arm
- Date Reserved
- 2026-06-16T11:40:06.387Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6aa01dbbacd9273b49c8370c
Added to database: 09/08/2026, 14:37:47 UTC
Last enriched: 09/08/2026, 14:54:02 UTC
Last updated: 09/09/2026, 01:15:07 UTC
Views: 8
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