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

Severity: unknown
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-12-30 · updated 2026-10-28

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.

Affected products

Linux kernel: 6.0 — fixed in 6.3

How to fix

Upgrade to a fixed version: Linux kernel 6.3. Check the vendor advisory for mitigations.

References

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

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