linux-cve-announce - CVE-2022-49480: ASoC: imx-hdmi: Fix refcount leak in imx_hdmi

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Message-ID: <2025022604-CVE-2022-49480-1f86@gregkh>
Date: Wed, 26 Feb 2025 03:12:34 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2022-49480: ASoC: imx-hdmi: Fix refcount leak in imx_hdmi_probe

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

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

ASoC: imx-hdmi: Fix refcount leak in imx_hdmi_probe

of_find_device_by_node() takes reference, we should use put_device()
to release it. when devm_kzalloc() fails, it doesn't have a
put_device(), it will cause refcount leak.
Add missing put_device() to fix this.

The Linux kernel CVE team has assigned CVE-2022-49480 to this issue.


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

	Issue introduced in 5.11 with commit 6a5f850aa83a1d844d27e3e53ca2f247e55d438b and fixed in 5.15.46 with commit cf760e494ee5fa6bc2dc222f0098c741ad460801
	Issue introduced in 5.11 with commit 6a5f850aa83a1d844d27e3e53ca2f247e55d438b and fixed in 5.17.14 with commit 8205a0114db10ec41bd2b748cdd7528632082eca
	Issue introduced in 5.11 with commit 6a5f850aa83a1d844d27e3e53ca2f247e55d438b and fixed in 5.18.3 with commit 81b7edaabd44ba133006ad72056914eb36828d60
	Issue introduced in 5.11 with commit 6a5f850aa83a1d844d27e3e53ca2f247e55d438b and fixed in 5.19 with commit ed46731d8e86c8d65f5fc717671e1f1f6c3146d2

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-2022-49480
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/fsl/imx-hdmi.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/cf760e494ee5fa6bc2dc222f0098c741ad460801
	https://git.kernel.org/stable/c/8205a0114db10ec41bd2b748cdd7528632082eca
	https://git.kernel.org/stable/c/81b7edaabd44ba133006ad72056914eb36828d60
	https://git.kernel.org/stable/c/ed46731d8e86c8d65f5fc717671e1f1f6c3146d2