CVE-2026-68443: hwmon: (gigabyte_waterforce) Stop device IO before calling hid_hw_stop

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

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

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

hwmon: (gigabyte_waterforce) Stop device IO before calling hid_hw_stop

Calling hid_hw_stop() does not stop the device IO.
This results in a race condition between hid_input_report() and the point
immediately following the execution of hid_device_io_start() within
the driver probe function. If the probe operation fails after "io start"
has been initiated, this race condition will result in a UAF vulnerability.

Fix the problem by calling hid_device_io_stop() before calling
hid_hw_stop().

The Linux kernel CVE team has assigned CVE-2026-68443 to this issue.


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

	Issue introduced in 6.8 with commit 42ac68e3d4ba06ad17bc56b790dbccc37e76e0ba and fixed in 6.12.101 with commit a855f678ba37ef82c4dd22926ad740ecfb8dbedf
	Issue introduced in 6.8 with commit 42ac68e3d4ba06ad17bc56b790dbccc37e76e0ba and fixed in 6.18.42 with commit f36e12cc8cfe996d627b8a82bd9df9e43270f6e2
	Issue introduced in 6.8 with commit 42ac68e3d4ba06ad17bc56b790dbccc37e76e0ba and fixed in 7.1.6 with commit 0842e9faab04f784d01125085195031252ff9695
	Issue introduced in 6.8 with commit 42ac68e3d4ba06ad17bc56b790dbccc37e76e0ba and fixed in 7.2-rc5 with commit ff0c5c53d08274e200b48a4d53aa078265e873cb

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-2026-68443
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/hwmon/gigabyte_waterforce.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/a855f678ba37ef82c4dd22926ad740ecfb8dbedf
	https://git.kernel.org/stable/c/f36e12cc8cfe996d627b8a82bd9df9e43270f6e2
	https://git.kernel.org/stable/c/0842e9faab04f784d01125085195031252ff9695
	https://git.kernel.org/stable/c/ff0c5c53d08274e200b48a4d53aa078265e873cb