# CVE-2025-1246: Mali GPU Userspace Driver allows an Out-of-Bounds access

> A non-privileged user can exploit an out-of-bounds access in the Mali GPU driver via WebGL or WebGPU to potentially execute code or escalate privileges.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 2 Jun 2025
- **Updated:** 2 Jun 2025
- **Also known as:** A-402121892, ASB-A-402121892, GHSA-qqx6-6jxm-2crq

## What is CVE-2025-1246?

CVE-2025-1246 is a high-severity memory corruption vulnerability in Arm 5th Gen GPU Architecture Userspace Driver, published on 2 Jun 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Improper Restriction of Operations within the Bounds of a Memory Buffer 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 outside of buffer bounds.This issue affects Bifrost GPU Userspace Driver: from r18p0 through r49p3, from r50p0 through r51p0; Valhall GPU Userspace Driver: from r28p0 through r49p3, from r50p0 through r54p0; Arm 5th Gen GPU Architecture Userspace Driver: from r41p0 through r49p3, from r50p0 through r54p0.

Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2025-1246?

It affects 3 products.


Products: Arm 5th Gen Gpu Architecture Userspace Driver, Arm Bifrost Gpu Userspace Driver, Arm Valhall Gpu Userspace Driver.

## How do I fix CVE-2025-1246?

Apply the vendor's patch.

## Is CVE-2025-1246 being exploited?

There is no known exploitation of CVE-2025-1246 in the wild and no public exploit code.

## Other vulnerabilities in Arm 5th Gen GPU Architecture Userspace Driver

- [CVE-2025-0050](https://insights.sbomify.com/CVE-2025-0050/): Mali GPU Userspace Driver allows an Out-of-Bounds access (medium 5.9)
- [CVE-2025-0932](https://insights.sbomify.com/CVE-2025-0932/): Mali GPU Userspace Driver allows access to already freed memory (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-1246 and fix it if it is affected.

What it is: CVE-2025-1246 is a high-severity memory corruption vulnerability in Arm 5th Gen GPU Architecture Userspace Driver, published on 2 Jun 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-1246 in the wild and no public exploit code.

Affected product: Arm 5th Gen GPU Architecture Userspace Driver. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-1246/ (Markdown: https://insights.sbomify.com/CVE-2025-1246/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-1246
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-1246
- OSV: https://osv.dev/vulnerability/CVE-2025-1246

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From sbomify Insights: https://insights.sbomify.com/CVE-2025-1246/
Summaries are generated and may contain mistakes; the official description above is the record.