linux-cve-announce - CVE-2022-49684: iio: adc: aspeed: Fix refcount leak in aspeed_adc_set_trim

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Message-ID: <2025022626-CVE-2022-49684-9c43@gregkh>
Date: Wed, 26 Feb 2025 03:24:07 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2022-49684: iio: adc: aspeed: Fix refcount leak in aspeed_adc_set_trim_data

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

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

iio: adc: aspeed: Fix refcount leak in aspeed_adc_set_trim_data

of_find_node_by_name() returns a node pointer with refcount
incremented, we should use of_node_put() on it when done.
Add missing of_node_put() to avoid refcount leak.

The Linux kernel CVE team has assigned CVE-2022-49684 to this issue.


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

	Issue introduced in 5.16 with commit d0a4c17b40736b368f1f26602ad162e24b4108e7 and fixed in 5.18.8 with commit 9664491db50a84be92696c8fad2c3b49a7a5f36f
	Issue introduced in 5.16 with commit d0a4c17b40736b368f1f26602ad162e24b4108e7 and fixed in 5.19 with commit 8a2b6b5687984a010ed094b4f436a2f091987758

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-2022-49684
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:
	drivers/iio/adc/aspeed_adc.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/9664491db50a84be92696c8fad2c3b49a7a5f36f
	https://git.kernel.org/stable/c/8a2b6b5687984a010ed094b4f436a2f091987758