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

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

[gregkh]

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

    USB: lvtest: 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-lvtest-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 <stable@vger.kernel.org> know about it.


>From 1dc56c52d2484be09c7398a5207d6b11a4256be9 Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan@kernel.org>
Date: Mon, 13 Mar 2017 13:47:49 +0100
Subject: USB: lvtest: fix NULL-deref at probe

From: Johan Hovold <johan@kernel.org>

commit 1dc56c52d2484be09c7398a5207d6b11a4256be9 upstream.

Make sure to check the number of endpoints to avoid dereferencing a
NULL-pointer should the probed device lack endpoints.

Note that this driver does not bind to any devices by default.

Fixes: ce21bfe603b3 ("USB: Add LVS Test device driver")
Cc: Pratyush Anand <pratyush.anand@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/usb/misc/lvstest.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/drivers/usb/misc/lvstest.c
+++ b/drivers/usb/misc/lvstest.c
@@ -370,6 +370,10 @@ static int lvs_rh_probe(struct usb_inter
 
 	hdev = interface_to_usbdev(intf);
 	desc = intf->cur_altsetting;
+
+	if (desc->desc.bNumEndpoints < 1)
+		return -ENODEV;
+
 	endpoint = &desc->endpoint[0].desc;
 
 	/* valid only for SS root hub */


Patches currently in stable-queue which might be from johan@kernel.org 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