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

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Message-ID: <2025123031-CVE-2023-54233-1e82@gregkh>
Date: Tue, 30 Dec 2025 13:14:03 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2023-54233: ASoC: SOF: avoid a NULL dereference with unsupported widgets

From: Greg Kroah-Hartman <gregkh@...nel.org>

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.

The Linux kernel CVE team has assigned CVE-2023-54233 to this issue.


Affected and fixed versions
===========================

	Fixed in 6.2.11 with commit 170818974e9732506195c6302743856cc8bdfd6f
	Fixed in 6.3 with commit e3720f92e0237921da537e47a0b24e27899203f8

Please see https://www.kernel.org for a full list of currently supported
kernel versions by the kernel community.

Unaffected versions might change over time as fixes are backported to
older supported kernel versions.  The official CVE entry at
	https://cve.org/CVERecord/?id=CVE-2023-54233
will be updated if fixes are backported, please check that for the most
up to date information about this issue.


Affected files
==============

The file(s) affected by this issue are:
	sound/soc/sof/ipc4-topology.c


Mitigation
==========

The Linux kernel CVE team recommends that you update to the latest
stable kernel version for this, and many other bugfixes.  Individual
changes are never tested alone, but rather are part of a larger kernel
release.  Cherry-picking individual commits is not recommended or
supported by the Linux kernel community at all.  If however, updating to
the latest release is impossible, the individual changes to resolve this
issue can be found at these commits:
	https://git.kernel.org/stable/c/170818974e9732506195c6302743856cc8bdfd6f
	https://git.kernel.org/stable/c/e3720f92e0237921da537e47a0b24e27899203f8