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

Not scored Published 30 Dec 2025 Updated 3 Oct 2026

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

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

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.

Sources

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.