linux-cve-announce - CVE-2022-49403: lib/string_helpers: fix not adding strarray to device's resource list

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Message-ID: <2025022651-CVE-2022-49403-cd89@gregkh>
Date: Wed, 26 Feb 2025 03:11:17 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2022-49403: lib/string_helpers: fix not adding strarray to device's resource list

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

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

lib/string_helpers: fix not adding strarray to device's resource list

Add allocated strarray to device's resource list. This is a must to
automatically release strarray when the device disappears.

Without this fix we have a memory leak in the few drivers which use
devm_kasprintf_strarray().

The Linux kernel CVE team has assigned CVE-2022-49403 to this issue.


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

	Issue introduced in 5.17 with commit acdb89b6c87a2d7b5c48a82756e6f5c6f599f60a and fixed in 5.17.14 with commit a152eb42fcecfe41239c3c6695342f3a128593e7
	Issue introduced in 5.17 with commit acdb89b6c87a2d7b5c48a82756e6f5c6f599f60a and fixed in 5.18.3 with commit bf29edab0c9ff3d2633b8306a67d04c357e2a385
	Issue introduced in 5.17 with commit acdb89b6c87a2d7b5c48a82756e6f5c6f599f60a and fixed in 5.19 with commit cd290a9839cee2f6641558877e707bd373c8f6f1

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-2022-49403
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:
	lib/string_helpers.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/a152eb42fcecfe41239c3c6695342f3a128593e7
	https://git.kernel.org/stable/c/bf29edab0c9ff3d2633b8306a67d04c357e2a385
	https://git.kernel.org/stable/c/cd290a9839cee2f6641558877e707bd373c8f6f1