CVE-2026-45875: mfd: arizona: Fix regulator resource leak on wm5102_clear_write_sequencer() failure

CVE-2026-45875: mfd: arizona: Fix regulator resource leak on wm5102_clear_write_sequencer() failure

[Greg Kroah-Hartman]

From: Greg Kroah-Hartman <gregkh@kernel.org>

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

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

mfd: arizona: Fix regulator resource leak on wm5102_clear_write_sequencer() failure

The wm5102_clear_write_sequencer() helper may return an error
and just return, bypassing the cleanup sequence and causing
regulators to remain enabled, leading to a resource leak.

Change the direct return to jump to the err_reset label to
properly free the resources.

The Linux kernel CVE team has assigned CVE-2026-45875 to this issue.


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

	Issue introduced in 4.2 with commit 1c1c6bba57f51331f64f32d0ce9a0f9883041205 and fixed in 5.10.252 with commit 54eafc1b0dbcf79c5f8b6dc8d9e92e56b9384c0a
	Issue introduced in 4.2 with commit 1c1c6bba57f51331f64f32d0ce9a0f9883041205 and fixed in 5.15.202 with commit 933c5463873582baaecf5c38401ec4095b1c6269
	Issue introduced in 4.2 with commit 1c1c6bba57f51331f64f32d0ce9a0f9883041205 and fixed in 6.1.165 with commit 445cec7b4fbb1546836ae8e332d158e8d37d0fb6
	Issue introduced in 4.2 with commit 1c1c6bba57f51331f64f32d0ce9a0f9883041205 and fixed in 6.6.128 with commit 3ea01691738b0decb63ea2705d2cdf27f6f26fc0
	Issue introduced in 4.2 with commit 1c1c6bba57f51331f64f32d0ce9a0f9883041205 and fixed in 6.12.75 with commit e0527c09bcf1e6beeb685a7f4177683866b8609c
	Issue introduced in 4.2 with commit 1c1c6bba57f51331f64f32d0ce9a0f9883041205 and fixed in 6.18.14 with commit 5a4923726a165593d7601834a6fb2a10ab47b85d
	Issue introduced in 4.2 with commit 1c1c6bba57f51331f64f32d0ce9a0f9883041205 and fixed in 6.19.4 with commit 2049820d1e635e467d795237fd40287213d92349
	Issue introduced in 4.2 with commit 1c1c6bba57f51331f64f32d0ce9a0f9883041205 and fixed in 7.0 with commit 4feb753ba6e5e5bbaba868b841a2db41c21e56fa

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-2026-45875
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/mfd/arizona-core.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/54eafc1b0dbcf79c5f8b6dc8d9e92e56b9384c0a
	https://git.kernel.org/stable/c/933c5463873582baaecf5c38401ec4095b1c6269
	https://git.kernel.org/stable/c/445cec7b4fbb1546836ae8e332d158e8d37d0fb6
	https://git.kernel.org/stable/c/3ea01691738b0decb63ea2705d2cdf27f6f26fc0
	https://git.kernel.org/stable/c/e0527c09bcf1e6beeb685a7f4177683866b8609c
	https://git.kernel.org/stable/c/5a4923726a165593d7601834a6fb2a10ab47b85d
	https://git.kernel.org/stable/c/2049820d1e635e467d795237fd40287213d92349
	https://git.kernel.org/stable/c/4feb753ba6e5e5bbaba868b841a2db41c21e56fa