# CVE-2023-54233: ASoC: SOF: avoid a NULL dereference with unsupported widgets

> A local attacker can cause a kernel crash by triggering a NULL pointer dereference in the SOF audio driver when processing unsupported widgets.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 30 Dec 2025
- **Updated:** 3 Oct 2026
- **Also known as:** BELL-CVE-2023-54233, DEBIAN-CVE-2023-54233, GHSA-h352-qwh6-g54m, ROOT-OS-DEBIAN-12-CVE-2023-54233, ROOT-OS-UBUNTU-2204-CVE-2023-54233, UBUNTU-CVE-2023-54233

## What is CVE-2023-54233?

CVE-2023-54233 is a vulnerability in Linux, published on 30 Dec 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

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

ASoC: SOF: avoid a NULL dereference with unsupported widgets

If an IPC4 topology contains an unsupported widget, its .module_info
field won't be set, then sof_ipc4_route_setup() will cause a kernel
Oops trying to dereference it. Add a check for such cases.

## Which versions are affected by CVE-2023-54233?


## How do I fix CVE-2023-54233?

Apply the vendor's patch.

## Is CVE-2023-54233 being exploited?

There is no known exploitation of CVE-2023-54233 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-54233 and fix it if it is affected.

What it is: CVE-2023-54233 is a vulnerability in Linux, published on 30 Dec 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-54233 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-2023-54233/ (Markdown: https://insights.sbomify.com/CVE-2023-54233/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-54233
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-54233
- OSV: https://osv.dev/vulnerability/CVE-2023-54233

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-54233/
Summaries are generated and may contain mistakes; the official description above is the record.