# CVE-2023-28469: Use after free in n/a

> A non-privileged user can exploit a use-after-free in the Arm Mali GPU driver to gain access to freed memory, potentially leading to privilege escalation or code execution.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N`)
- **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 2023
- **Updated:** 8 Jan 2025
- **Also known as:** A-274006187, ASB-A-274006187, GHSA-xmp7-hhpr-wjgh

## What is CVE-2023-28469?

CVE-2023-28469 is a medium-severity use after free vulnerability in Arm Valhall Gpu Kernel Driver, published on 2 Jun 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

An issue was discovered in the Arm Mali GPU Kernel Driver. A non-privileged user can make improper GPU processing operations to gain access to already freed memory. This affects Valhall r29p0 through r42p0 before r43p0, and Arm's GPU Architecture Gen5 r41p0 through r42p0 before r43p0.

Weakness: CWE-416 (Use After Free)

## Which versions are affected by CVE-2023-28469?

It affects 2 products.


Products: Arm Avalon Gpu Kernel Driver, Arm Valhall Gpu Kernel Driver.

## How do I fix CVE-2023-28469?

Apply the vendor's patch.

## Is CVE-2023-28469 being exploited?

There is no known exploitation of CVE-2023-28469 in the wild and no public exploit code.

## Other vulnerabilities in Arm Valhall Gpu Kernel Driver

- [CVE-2022-46394](https://insights.sbomify.com/CVE-2022-46394/): Use after free in n/a (high 8.8)
- [CVE-2022-46395](https://insights.sbomify.com/CVE-2022-46395/): Use after free in n/a (high 8.8)
- [CVE-2023-28147](https://insights.sbomify.com/CVE-2023-28147/): Use after free in n/a (medium 5.5)
- [CVE-2022-46396](https://insights.sbomify.com/CVE-2022-46396/): Memory corruption in n/a (medium 4.4)
- [CVE-2022-46781](https://insights.sbomify.com/CVE-2022-46781/): Memory corruption in n/a (low 3.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-28469 and fix it if it is affected.

What it is: CVE-2023-28469 is a medium-severity use after free vulnerability in Arm Valhall Gpu Kernel Driver, published on 2 Jun 2023. 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-2023-28469 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-2023-28469/ (Markdown: https://insights.sbomify.com/CVE-2023-28469/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-28469
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-28469
- OSV: https://osv.dev/vulnerability/CVE-2023-28469

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-28469/
Summaries are generated and may contain mistakes; the official description above is the record.