Patch "USB: uss720: fix NULL-deref at probe" has been added to the 4.4-stable tree

This is a note to let you know that I've just added the patch titled

USB: uss720: fix NULL-deref at probe

to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
usb-uss720-fix-null-deref-at-probe.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Johan Hovold <[email protected]>
Date: Mon, 13 Mar 2017 13:47:50 +0100
Subject: USB: uss720: fix NULL-deref at probe

From: Johan Hovold <[email protected]>

commit f259ca3eed6e4b79ac3d5c5c9fb259fb46e86217 upstream.

Make sure to check the number of endpoints to avoid dereferencing a NULL-pointer or accessing memory beyond the endpoint array should a malicious device lack the expected endpoints.

Note that the endpoint access that causes the NULL-deref is currently only used for debugging purposes during probe so the oops only happens when dynamic debugging is enabled. This means the driver could be rewritten to continue to accept device with only two endpoints, should such devices exist.

---
 drivers/usb/misc/uss720.c |    5 +++++
 1 file changed, 5 insertions(+)

@@ -711,6 +711,11 @@ static int uss720_probe(struct usb_inter
 
 	interface = intf->cur_altsetting;
 
+	if (interface->desc.bNumEndpoints < 3) {
+		usb_put_dev(usbdev);
+		return -ENODEV;
+	}
+
 	/*
 	 * Allocate parport interface 
 	 */

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/usb-serial-option-add-quectel-uc15-uc20-ec21-and-ec25-modems.patch queue-4.4/input-ims-pcu-validate-number-of-endpoints-before-using-them.patch queue-4.4/input-cm109-validate-number-of-endpoints-before-using-them.patch queue-4.4/input-iforce-validate-number-of-endpoints-before-using-them.patch queue-4.4/mmc-ushc-fix-null-deref-at-probe.patch queue-4.4/input-kbtab-validate-number-of-endpoints-before-using-them.patch queue-4.4/input-sur40-validate-number-of-endpoints-before-using-them.patch queue-4.4/uwb-i1480-dfu-fix-null-deref-at-probe.patch queue-4.4/input-hanwang-validate-number-of-endpoints-before-using-them.patch queue-4.4/usb-idmouse-fix-null-deref-at-probe.patch queue-4.4/uwb-hwa-rc-fix-null-deref-at-probe.patch queue-4.4/usb-lvtest-fix-null-deref-at-probe.patch queue-4.4/input-yealink-validate-number-of-endpoints-before-using-them.patch queue-4.4/usb-serial-qcserial-add-dell-dw5811e.patch queue-4.4/usb-uss720-fix-null-deref-at-probe.patch queue-4.4/usb-wusbcore-fix-null-deref-at-probe.patch