linux-cve-announce - CVE-2023-54075: ASoC: mediatek: common: Fix refcount leak in parse_dai_link

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Message-ID: <2025122433-CVE-2023-54075-ab3e@gregkh>
Date: Wed, 24 Dec 2025 13:27:08 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2023-54075: ASoC: mediatek: common: Fix refcount leak in parse_dai_link_info

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

Description
===========

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

ASoC: mediatek: common: Fix refcount leak in parse_dai_link_info

Add missing of_node_put()s before the returns to balance
of_node_get()s and of_node_put()s, which may get unbalanced
in case the for loop 'for_each_available_child_of_node' returns
early.

The Linux kernel CVE team has assigned CVE-2023-54075 to this issue.


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

	Issue introduced in 6.3 with commit 4302187d955f166c03b4fa7c993b89ffbabfca4e and fixed in 6.3.2 with commit 3e40722d55805584dc04d8594d912820cafb2432
	Issue introduced in 6.3 with commit 4302187d955f166c03b4fa7c993b89ffbabfca4e and fixed in 6.4 with commit beed115c2ce78f990222a29abed042582df4e87c

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-2023-54075
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/mediatek/common/mtk-soundcard-driver.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/3e40722d55805584dc04d8594d912820cafb2432
	https://git.kernel.org/stable/c/beed115c2ce78f990222a29abed042582df4e87c