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hwmon: (nzxt-smart2) Stop device IO before calling hid_hw_stop

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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().

Reported-by: Sashiko <sashiko-bot@kernel.org>
Fixes: 53e68c20ae ("hwmon: add driver for NZXT RGB&Fan Controller/Smart Device v2")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Guenter Roeck 2026-07-07 18:00:32 -07:00
parent ff0c5c53d0
commit 59d104b54b
1 changed files with 1 additions and 1 deletions
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2
drivers/hwmon/nzxt-smart2.c
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@ -768,7 +768,7 @@ static int nzxt_smart2_hid_probe(struct hid_device *hdev,
out_hw_close:
hid_hw_close(hdev);
hid_device_io_stop(hdev);
out_hw_stop:
hid_hw_stop(hdev);
return ret;