From 59d104b54b0b42e30fd2a68d24ee5c49dcc54d1e Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Tue, 7 Jul 2026 18:00:32 -0700 Subject: [PATCH] hwmon: (nzxt-smart2) 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(). Reported-by: Sashiko Fixes: 53e68c20aeb1e ("hwmon: add driver for NZXT RGB&Fan Controller/Smart Device v2") Signed-off-by: Guenter Roeck --- drivers/hwmon/nzxt-smart2.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hwmon/nzxt-smart2.c b/drivers/hwmon/nzxt-smart2.c index 58ef9fa0184b..e2316c46629d 100644 --- a/drivers/hwmon/nzxt-smart2.c +++ b/drivers/hwmon/nzxt-smart2.c @@ -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;