# CVE-2022-36449: Use after free in n/a

> A non-privileged user can exploit a use-after-free flaw in the Arm Mali GPU driver to read or write memory, potentially leading to information disclosure or limited memory corruption.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 1 Sep 2022
- **Updated:** 3 Aug 2024
- **Also known as:** A-259983537, ASB-A-259983537, GHSA-ff7h-mhv4-853x

## What is CVE-2022-36449?

CVE-2022-36449 is a medium-severity use after free vulnerability in Arm Valhall Gpu Kernel Driver, published on 1 Sep 2022. An attacker can exploit it over the internet without logging in, 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, write a limited amount outside of buffer bounds, or to disclose details of memory mappings. This affects Midgard r4p0 through r32p0, Bifrost r0p0 through r38p0 and r39p0 before r38p1, and Valhall r19p0 through r38p0 and r39p0 before r38p1.

Weakness: CWE-416 (Use After Free)

## Which versions are affected by CVE-2022-36449?

It affects 3 products.


Products: Arm Bifrost Gpu Kernel Driver, Arm Midgard Gpu Kernel Driver, Arm Valhall Gpu Kernel Driver.

## How do I fix CVE-2022-36449?

Apply the vendor's patch.

## Is CVE-2022-36449 being exploited?

There is no known exploitation of CVE-2022-36449 in the wild and no public exploit code.

## Other vulnerabilities in Arm Valhall Gpu Kernel Driver

- [CVE-2022-38181](https://insights.sbomify.com/CVE-2022-38181/): Arm Mali GPU Kernel Driver Use-After-Free (high 8.8, exploited in the wild)
- [CVE-2021-29256](https://insights.sbomify.com/CVE-2021-29256/): Arm Mali GPU Kernel Driver Use-After-Free (high 8.8, exploited in the wild)
- [CVE-2021-28663](https://insights.sbomify.com/CVE-2021-28663/): Arm Mali Graphics Processing Unit (GPU) Use-After-Free (high 8.8, exploited in the wild)
- [CVE-2021-28664](https://insights.sbomify.com/CVE-2021-28664/): Arm Mali Graphics Processing Unit (GPU) Unspecified (high 8.8, exploited in the wild)
- [CVE-2022-22706](https://insights.sbomify.com/CVE-2022-22706/): Arm Mali GPU Kernel Driver Unspecified (high 7.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-36449 and fix it if it is affected.

What it is: CVE-2022-36449 is a medium-severity use after free vulnerability in Arm Valhall Gpu Kernel Driver, published on 1 Sep 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-36449 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-2022-36449/ (Markdown: https://insights.sbomify.com/CVE-2022-36449/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-36449
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-36449
- OSV: https://osv.dev/vulnerability/CVE-2022-36449

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From sbomify Insights: https://insights.sbomify.com/CVE-2022-36449/
Summaries are generated and may contain mistakes; the official description above is the record.