# GSD-2022-1001911: dm: fix use-after-free in dm_cleanup_zoned_dev()

> A use-after-free vulnerability in the Linux kernel's device mapper zoned block device cleanup allows potential code execution or denial of service.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Not stated
- **Attackable:** Not stated
- **Victim action needed:** Not stated
- **Fix available:** No
- **Published:** 24 Apr 2022

## What is GSD-2022-1001911?

GSD-2022-1001911 is an use after free vulnerability in Kernel, published on 24 Apr 2022. 

### Official description

dm: fix use-after-free in dm_cleanup_zoned_dev()

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 v5.15.33 by commit 0987f00a76a17aa7213da492c00ed9e5a6210c73, it was introduced in version v5.14 by commit bb37d77239af25cde59693dbe3fac04dd17d7b29. For more details please see the references link.

## Which versions are affected by GSD-2022-1001911?

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-2022-1001911?

No fix has been published for GSD-2022-1001911 yet. Limit exposure of the affected software until one is available.

## Is GSD-2022-1001911 being exploited?

There is no known exploitation of GSD-2022-1001911 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for GSD-2022-1001911 and fix it if it is affected.

What it is: GSD-2022-1001911 is an use after free vulnerability in Kernel, published on 24 Apr 2022. 
Exploitation: There is no known exploitation of GSD-2022-1001911 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-2022-1001911/ (Markdown: https://insights.sbomify.com/GSD-2022-1001911/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/GSD-2022-1001911

---
From sbomify Insights: https://insights.sbomify.com/GSD-2022-1001911/
Summaries are generated and may contain mistakes; the official description above is the record.