# GSD-2022-1007120: ext4: fix null-ptr-deref in ext4_write_info

> A null pointer dereference in the ext4 filesystem can cause a system crash, requiring a kernel patch to mitigate.

- **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:** 14 Nov 2022

## What is GSD-2022-1007120?

GSD-2022-1007120 is a vulnerability in Kernel, published on 14 Nov 2022. 

### Official description

ext4: fix null-ptr-deref in ext4_write_info

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 v5.15.75 by commit 533c60a0b97cee5daab376933f486207e6680fb7. For more details please see the references link.

## Which versions are affected by GSD-2022-1007120?

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-2022-1007120?

No fix has been published for GSD-2022-1007120 yet. Limit exposure of the affected software until one is available.

## Is GSD-2022-1007120 being exploited?

There is no known exploitation of GSD-2022-1007120 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for GSD-2022-1007120 and fix it if it is affected.

What it is: GSD-2022-1007120 is a vulnerability in Kernel, published on 14 Nov 2022. 
Exploitation: There is no known exploitation of GSD-2022-1007120 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-2022-1007120/ (Markdown: https://insights.sbomify.com/GSD-2022-1007120/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/GSD-2022-1007120

---
From sbomify Insights: https://insights.sbomify.com/GSD-2022-1007120/
Summaries are generated and may contain mistakes; the official description above is the record.