HID: hid-thrustmaster: fix stack-out-of-bounds read in usb_check_int_…

…endpoints()

Syzbot[1] has detected a stack-out-of-bounds read of the ep_addr array from
hid-thrustmaster driver. This array is passed to usb_check_int_endpoints
function from usb.c core driver, which executes a for loop that iterates
over the elements of the passed array. Not finding a null element at the end of
the array, it tries to read the next, non-existent element, crashing the kernel.

To fix this, a 0 element was added at the end of the array to break the for
loop.

[1] https://syzkaller.appspot.com/bug?extid=9c9179ac46169c56c1ad

Reported-by: syzbot+9c9179ac46169c56c1ad@syzkaller.appspotmail.com
Fixes: 50420d7 ("HID: hid-thrustmaster: Fix warning in thrustmaster_probe by adding endpoint check")
Signed-off-by: Túlio Fernandes <tuliomf09@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>

drivers/hid/hid-thrustmaster.c

@@ -171,7 +171,7 @@ static void thrustmaster_interrupts(struct hid_device *hdev)
 	b_ep = ep->desc.bEndpointAddress;
 
 	/* Are the expected endpoints present? */
-	u8 ep_addr[1] = {b_ep};
+	u8 ep_addr[2] = {b_ep, 0};
 
 	if (!usb_check_int_endpoints(usbif, ep_addr)) {
 		hid_err(hdev, "Unexpected non-int endpoint\n");