linux-cve-announce - CVE-2022-49528: media: i2c: dw9714: Disable the regulator when the driver fails to probe

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Message-ID: <2025022612-CVE-2022-49528-9957@gregkh>
Date: Wed, 26 Feb 2025 03:13:22 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2022-49528: media: i2c: dw9714: Disable the regulator when the driver fails to probe

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

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

media: i2c: dw9714: Disable the regulator when the driver fails to probe

When the driver fails to probe, we will get the following splat:

[   59.305988] ------------[ cut here ]------------
[   59.306417] WARNING: CPU: 2 PID: 395 at drivers/regulator/core.c:2257 _regulator_put+0x3ec/0x4e0
[   59.310345] RIP: 0010:_regulator_put+0x3ec/0x4e0
[   59.318362] Call Trace:
[   59.318582]  <TASK>
[   59.318765]  regulator_put+0x1f/0x30
[   59.319058]  devres_release_group+0x319/0x3d0
[   59.319420]  i2c_device_probe+0x766/0x940

Fix this by disabling the regulator in error handling.

The Linux kernel CVE team has assigned CVE-2022-49528 to this issue.


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

	Fixed in 5.18.3 with commit fa83ea1de5b3efd87fe01408d5db1fd2ff4767fa
	Fixed in 5.19 with commit 02276e18defa2fccf16413b44440277d98c2b1ea

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-2022-49528
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/media/i2c/dw9714.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/fa83ea1de5b3efd87fe01408d5db1fd2ff4767fa
	https://git.kernel.org/stable/c/02276e18defa2fccf16413b44440277d98c2b1ea