CVE-2026-11891
Mali GPU Userspace Driver allows access to already freed memory
Reported by arm · Published September 8, 2026
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. 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.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| Valhall GPU Userspace Driver | Arm Ltd | r54p3, r49p5 |
| Arm 5th Gen GPU Architecture Userspace Driver | Arm Ltd | r54p3, r49p5 |
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Arm Ltd | Valhall GPU Userspace Driver | r46p0, r50p0, r55p0 |
| Arm Ltd | Arm 5th Gen GPU Architecture Userspace Driver | r46p0, r50p0, r55p0 |
| Arm Ltd | Valhall GPU Userspace Driver | *, *, * |
| Arm Ltd | Arm 5th Gen GPU Architecture Userspace Driver | *, *, * |
Timeline
- Sep 8, 2026 Coalition ESS Score
- Sep 8, 2026 CVE Published
- Sep 9, 2026 EPSS Score (4 in total, the first dated here)
- Sep 10, 2026 CVE Updated
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