# CVE-2022-50875: of: overlay: fix null pointer dereferencing in find_dup_cset_node_entry() and find_dup_cset_prop()

> A null pointer dereference in the Linux kernel's device tree overlay code can cause a system crash when memory allocation fails.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Not stated
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 30 Dec 2025
- **Updated:** 11 May 2026
- **Also known as:** DEBIAN-CVE-2022-50875, GHSA-7394-w6hr-wqhw, UBUNTU-CVE-2022-50875

## What is CVE-2022-50875?

CVE-2022-50875 is a vulnerability in Linux, published on 30 Dec 2025. 

### Official description

In the Linux kernel, the following vulnerability has been resolved:

of: overlay: fix null pointer dereferencing in find_dup_cset_node_entry() and find_dup_cset_prop()

When kmalloc() fail to allocate memory in kasprintf(), fn_1 or fn_2 will
be NULL, and strcmp() will cause null pointer dereference.

## Which versions are affected by CVE-2022-50875?


## How do I fix CVE-2022-50875?

Apply the vendor's patch.

## Is CVE-2022-50875 being exploited?

There is no known exploitation of CVE-2022-50875 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-50875 and fix it if it is affected.

What it is: CVE-2022-50875 is a vulnerability in Linux, published on 30 Dec 2025. 
Exploitation: There is no known exploitation of CVE-2022-50875 in the wild and no public exploit code.

Affected product: Linux. 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-2022-50875/ (Markdown: https://insights.sbomify.com/CVE-2022-50875/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-50875
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-50875
- OSV: https://osv.dev/vulnerability/CVE-2022-50875

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-50875/
Summaries are generated and may contain mistakes; the official description above is the record.