# CVE-2023-6363: Mali GPU Kernel Driver allows improper GPU processing operations

> A local attacker can exploit a use-after-free flaw in the Mali GPU kernel driver to access freed memory, potentially leading to privilege escalation or code execution.

- **Severity:** Medium 5.1 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 3 May 2024
- **Updated:** 25 Nov 2024
- **Also known as:** A-303632069, ASB-A-303632069, GHSA-gg2x-v7xp-pj7x

## What is CVE-2023-6363?

CVE-2023-6363 is a medium-severity use after free vulnerability in Arm Valhall Gpu Kernel Driver, published on 3 May 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Use After Free vulnerability in Arm Ltd Valhall GPU Kernel Driver, Arm Ltd Arm 5th Gen GPU Architecture Kernel Driver allows a local non-privileged user to make improper GPU memory processing operations. If the system’s memory is carefully prepared by the user, then this in turn could give them access to already freed memory.
This issue affects Valhall GPU Kernel Driver: from r41p0 through r47p0; Arm 5th Gen GPU Architecture Kernel Driver: from r41p0 through r47p0.

Weakness: CWE-416 (Use After Free)

## Which versions are affected by CVE-2023-6363?

It affects 2 products.


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

## How do I fix CVE-2023-6363?

Apply the vendor's patch.

## Is CVE-2023-6363 being exploited?

There is no known exploitation of CVE-2023-6363 in the wild and no public exploit code.

## Other vulnerabilities in Arm Valhall Gpu Kernel Driver

- [CVE-2023-4211](https://insights.sbomify.com/CVE-2023-4211/): Arm Mali GPU Kernel Driver Use-After-Free (medium 5.5, exploited in the wild)
- [CVE-2023-26083](https://insights.sbomify.com/CVE-2023-26083/): Arm Mali GPU Kernel Driver Information Disclosure (low 3.3, exploited in the wild)
- [CVE-2023-6143](https://insights.sbomify.com/CVE-2023-6143/): Mali GPU Kernel Driver allows improper GPU memory processing operations (high 8.4)
- [CVE-2025-0073](https://insights.sbomify.com/CVE-2025-0073/): Mali GPU Kernel Driver allows improper GPU memory processing operations (high 7.8)
- [CVE-2025-0819](https://insights.sbomify.com/CVE-2025-0819/): Mali GPU Kernel Driver allows access to already freed memory (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-6363 and fix it if it is affected.

What it is: CVE-2023-6363 is a medium-severity use after free vulnerability in Arm Valhall Gpu Kernel Driver, published on 3 May 2024. 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-2023-6363 in the wild and no public exploit code.

Affected product: Arm Valhall Gpu Kernel 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-2023-6363/ (Markdown: https://insights.sbomify.com/CVE-2023-6363/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-6363
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-6363
- OSV: https://osv.dev/vulnerability/CVE-2023-6363

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-6363/
Summaries are generated and may contain mistakes; the official description above is the record.