linux-cve-announce - CVE-2022-49244: ASoC: mediatek: mt8192-mt6359: Fix error handling in mt8192_mt6359_dev

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Message-ID: <2025022625-CVE-2022-49244-cff0@gregkh>
Date: Wed, 26 Feb 2025 02:57:29 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2022-49244: ASoC: mediatek: mt8192-mt6359: Fix error handling in mt8192_mt6359_dev_probe

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

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

ASoC: mediatek: mt8192-mt6359: Fix error handling in mt8192_mt6359_dev_probe

The device_node pointer is returned by of_parse_phandle()  with refcount
incremented. We should use of_node_put() on it when done.

This function only calls of_node_put() in the regular path.
And it will cause refcount leak in error paths.
Fix this by calling of_node_put() in error handling too.

The Linux kernel CVE team has assigned CVE-2022-49244 to this issue.


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

	Issue introduced in 5.15.17 with commit 286c6f7b28fab19d649c2e1f3bc18fdecdbadfe5 and fixed in 5.15.33 with commit 87e04a89c31e792eef62bcba6ebb77fd323d28a1
	Issue introduced in 5.16.3 with commit d1be8577f0b2f679095d237aaf281dca344f06c4 and fixed in 5.16.19 with commit d5a38629f1aaf397fd471b27e49d55289ddc0656
	Issue introduced in 5.17 with commit 4e28491a7a198c668437f2be8a91a76aa52f20eb and fixed in 5.17.2 with commit 1765787ec02e824f4f5e672cf269280a5da09d2f
	Issue introduced in 5.17 with commit 4e28491a7a198c668437f2be8a91a76aa52f20eb and fixed in 5.18 with commit e45ac7831ff3e2934d58cce319c17c8ec763c95c

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-2022-49244
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/mt8192/mt8192-mt6359-rt1015-rt5682.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/87e04a89c31e792eef62bcba6ebb77fd323d28a1
	https://git.kernel.org/stable/c/d5a38629f1aaf397fd471b27e49d55289ddc0656
	https://git.kernel.org/stable/c/1765787ec02e824f4f5e672cf269280a5da09d2f
	https://git.kernel.org/stable/c/e45ac7831ff3e2934d58cce319c17c8ec763c95c