CVE-2026-9040
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Race Condition in Arm GPU Kernel Drivers Causes DoS or Information Disclosure
Vulnerability report for CVE-2026-9040, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-09-08
Last updated on: 2026-09-08
Assigner: Arm Limited
Description
Description
A race condition 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 improper GPU memory processing operations to cause a denial of service or disclose sensitive information.
This issue affects Bifrost GPU Kernel Driver: from r12p0 through r49p5, from r50p0 through r51p0, from r54p1 through r54p2; Valhall GPU Kernel Driver: from r19p0 through r49p5, from r50p0 through r54p3, r55p0; Arm 5th Gen GPU Architecture Kernel Driver: from r41p0 through r49p5, from r50p0 through r54p3, r55p0.
CVSS Scores
EPSS Scores
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| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| arm_ltd | bifrost_gpu_kernel_driver | From r12p0 (inc) to r49p5 (inc) |
| arm_ltd | bifrost_gpu_kernel_driver | From r50p0 (inc) to r51p0 (inc) |
| arm_ltd | bifrost_gpu_kernel_driver | From r54p1 (inc) to r54p2 (inc) |
| arm_ltd | valhall_gpu_kernel_driver | From r19p0 (inc) to r49p5 (inc) |
| arm_ltd | valhall_gpu_kernel_driver | From r50p0 (inc) to r54p3 (inc) |
| arm_ltd | valhall_gpu_kernel_driver | From r55p0 (inc) |
| arm_ltd | arm_5th_gen_gpu_architecture_kernel_driver | From r41p0 (inc) to r49p5 (inc) |
| arm_ltd | arm_5th_gen_gpu_architecture_kernel_driver | From r50p0 (inc) to r54p3 (inc) |
| arm_ltd | arm_5th_gen_gpu_architecture_kernel_driver | From r55p0 (inc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-362 | The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently. |
