linux-kernel - [PATCH 4.4 043/113] usb: gadget: fsl_qe_udc: off by one in setup_received

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Date:   Mon,  5 Sep 2016 18:44:06 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Peter Chen <peter.chen@....com>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Felipe Balbi <felipe.balbi@...ux.intel.com>
Subject: [PATCH 4.4 043/113] usb: gadget: fsl_qe_udc: off by one in setup_received_handle()

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dan Carpenter <dan.carpenter@...cle.com>

commit 7442e6db5bdd0dce4615205508301f9b22e502d6 upstream.

The udc->eps[] array has USB_MAX_ENDPOINTS elements so > should be >=.

Fixes: 3948f0e0c999 ('usb: add Freescale QE/CPM USB peripheral controller driver')
Acked-by: Peter Chen <peter.chen@....com>
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Felipe Balbi <felipe.balbi@...ux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/usb/gadget/udc/fsl_qe_udc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/gadget/udc/fsl_qe_udc.c
+++ b/drivers/usb/gadget/udc/fsl_qe_udc.c
@@ -2053,7 +2053,7 @@ static void setup_received_handle(struct
 			struct qe_ep *ep;
 
 			if (wValue != 0 || wLength != 0
-				|| pipe > USB_MAX_ENDPOINTS)
+				|| pipe >= USB_MAX_ENDPOINTS)
 				break;
 			ep = &udc->eps[pipe];