Mali GPU Userspace Driver allows access to already freed memory
Summary
| CVE | CVE-2026-9034 |
|---|---|
| State | PUBLISHED |
| Assigner | Arm |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-09-08 15:18:56 UTC |
| Updated | 2026-09-10 19:17:42 UTC |
| Description | Use After Free vulnerability in Arm Ltd Bifrost GPU Userspace Driver, 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 Bifrost GPU Userspace Driver: from r42p0 through r49p5, from r50p0 through r51p0, from r54p1 through r54p3; Valhall GPU Userspace Driver: from r42p0 through r49p5, from r50p0 through r54p3, r55p0; Arm 5th Gen GPU Architecture Userspace Driver: from r42p0 through r49p5, from r50p0 through r54p3, r55p0. |
Risk And Classification
Primary CVSS: v3.1 7.8 HIGH from ADP
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.001100000 probability, percentile 0.014250000 (date 2026-09-11)
Problem Types: CWE-416 | CWE-416 CWE-416 Use After Free
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | ADP | DECLARED | 7.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | Secondary | 7.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Arm Ltd | Bifrost GPU Userspace Driver | affected r42p0 r49p5 patch | Not specified |
| CNA | Arm Ltd | Bifrost GPU Userspace Driver | affected r50p0 r51p0 patch | Not specified |
| CNA | Arm Ltd | Bifrost GPU Userspace Driver | affected r54p1 r54p3 patch | Not specified |
| CNA | Arm Ltd | Valhall GPU Userspace Driver | affected r42p0 r49p5 patch | Not specified |
| CNA | Arm Ltd | Valhall GPU Userspace Driver | affected r50p0 r54p3 patch | Not specified |
| CNA | Arm Ltd | Valhall GPU Userspace Driver | affected r55p0 patch | Not specified |
| CNA | Arm Ltd | Valhall GPU Userspace Driver | unaffected r56p0 patch | Not specified |
| CNA | Arm Ltd | Arm 5th Gen GPU Architecture Userspace Driver | affected r42p0 r49p5 patch | Not specified |
| CNA | Arm Ltd | Arm 5th Gen GPU Architecture Userspace Driver | affected r50p0 r54p3 patch | Not specified |
| CNA | Arm Ltd | Arm 5th Gen GPU Architecture Userspace Driver | affected r55p0 patch | Not specified |
| CNA | Arm Ltd | Arm 5th Gen GPU Architecture Userspace Driver | unaffected r56p0 patch | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| support.arm.com/documentation/111552/1-0 | [email protected] | support.arm.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Florian Schweitzer (aff. Certitude Consulting GmbH) (en)
Additional Advisory Data
Solutions
CNA: This issue has been fixed in the following versions: Valhall GPU Userspace Driver: r56p0; Arm 5th Gen GPU Architecture Userspace Driver: r56p0. Arm partners are recommended to upgrade to the latest applicable version as soon as possible.
There are currently no legacy QID mappings associated with this CVE.