# GSD-2022-1000252: mm, kasan: use compare-exchange operation to set KASAN page tag

> A race condition in KASAN page tag setting was fixed in the Linux kernel, potentially affecting memory safety mechanisms.

- **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:** 18 Feb 2022

## What is GSD-2022-1000252?

GSD-2022-1000252 is a vulnerability in Kernel, published on 18 Feb 2022. 

### Official description

mm, kasan: use compare-exchange operation to set KASAN page tag

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 v5.15.19 by commit 4ca8a0bc83543a0d29a7f5a8b1e8ef3c23dab242, it was introduced in version v5.0 by commit 2813b9c0296259fb11e75c839bab2d958ba4f96c. For more details please see the references link.

## Which versions are affected by GSD-2022-1000252?

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-2022-1000252?

No fix has been published for GSD-2022-1000252 yet. Limit exposure of the affected software until one is available.

## Is GSD-2022-1000252 being exploited?

There is no known exploitation of GSD-2022-1000252 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for GSD-2022-1000252 and fix it if it is affected.

What it is: GSD-2022-1000252 is a vulnerability in Kernel, published on 18 Feb 2022. 
Exploitation: There is no known exploitation of GSD-2022-1000252 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-2022-1000252/ (Markdown: https://insights.sbomify.com/GSD-2022-1000252/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/GSD-2022-1000252

---
From sbomify Insights: https://insights.sbomify.com/GSD-2022-1000252/
Summaries are generated and may contain mistakes; the official description above is the record.