CVE-2026-74604: Revert "thermal/drivers/hwmon: Cleanup coding style a bit"

From: Greg Kroah-Hartman <[email protected]>

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

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

Revert "thermal/drivers/hwmon: Cleanup coding style a bit"

Revert commit 030a48b0f6ce ("thermal/drivers/hwmon: Cleanup coding style
a bit") that introduced a use-after-free into the error path of
thermal_add_hwmon_sysfs() by removing a valid check from it.

The Linux kernel CVE team has assigned CVE-2026-74604 to this issue.


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

	Fixed in 5.15.216 with commit 2434f4765da8ccd7ef31be88b86f1bfa2e95be11
	Fixed in 6.1.183 with commit b4c01ae6dd56d9dfd96bd1b29c28afa8fa06b366
	Fixed in 6.6.152 with commit 999e573212d5f1debf073c68be35e55bbfad12fc
	Fixed in 6.12.104 with commit 6a48ee9a5bda0f8ee501f9bef159fb9f39ff519a
	Fixed in 6.18.45 with commit 8d34019d1413629a434a7e8d9f91c76d256196a0
	Fixed in 7.1.9 with commit 6b446d335ba16e93a266dd77adf1ba51abc82df4
	Fixed in 7.2 with commit ff8da20b6f47c48d46e47f93f7a59e2d56ee9107

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-2026-74604
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/thermal/thermal_hwmon.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/2434f4765da8ccd7ef31be88b86f1bfa2e95be11
	https://git.kernel.org/stable/c/b4c01ae6dd56d9dfd96bd1b29c28afa8fa06b366
	https://git.kernel.org/stable/c/999e573212d5f1debf073c68be35e55bbfad12fc
	https://git.kernel.org/stable/c/6a48ee9a5bda0f8ee501f9bef159fb9f39ff519a
	https://git.kernel.org/stable/c/8d34019d1413629a434a7e8d9f91c76d256196a0
	https://git.kernel.org/stable/c/6b446d335ba16e93a266dd77adf1ba51abc82df4
	https://git.kernel.org/stable/c/ff8da20b6f47c48d46e47f93f7a59e2d56ee9107