# GSD-2022-1003992: wifi: mac80211: fix use-after-free in chanctx code

> A use-after-free vulnerability in the Linux kernel mac80211 Wi-Fi subsystem could allow local attackers to execute code or cause a system crash.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Not stated
- **Attackable:** Local or same network only
- **Victim action needed:** Not stated
- **Fix available:** No
- **Published:** 28 Jun 2022

## What is GSD-2022-1003992?

GSD-2022-1003992 is an use after free vulnerability in Kernel, published on 28 Jun 2022. It can only be exploited from the same machine or local network.

### Official description

wifi: mac80211: fix use-after-free in chanctx code

This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven.
This ID is fixed in Linux Kernel version v4.14.283 by commit 4ba81e794f0fad6234f644c2da1ae14d5b95e1c4, it was introduced in version v3.17 by commit 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f. For more details please see the references link.

## Which versions are affected by GSD-2022-1003992?

1 open source package ship an affected version, including Kernel.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `Kernel` | Linux | All versions | None |

## How do I fix GSD-2022-1003992?

No fix has been published for GSD-2022-1003992 yet. Limit exposure of the affected software until one is available.

## Is GSD-2022-1003992 being exploited?

There is no known exploitation of GSD-2022-1003992 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for GSD-2022-1003992 and fix it if it is affected.

What it is: GSD-2022-1003992 is an use after free vulnerability in Kernel, published on 28 Jun 2022. It can only be exploited from the same machine or local network.
Exploitation: There is no known exploitation of GSD-2022-1003992 in the wild and no public exploit code.

Affected packages and fixed versions:
- Kernel (Linux): affected all versions; no fix listed

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/GSD-2022-1003992/ (Markdown: https://insights.sbomify.com/GSD-2022-1003992/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/GSD-2022-1003992

---
From sbomify Insights: https://insights.sbomify.com/GSD-2022-1003992/
Summaries are generated and may contain mistakes; the official description above is the record.