Patch "[media] mceusb: fix NULL-deref at probe" has been added to the 4.9-stable tree

Patch "[media] mceusb: fix NULL-deref at probe" has been added to the 4.9-stable tree

[gregkh]

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

    [media] mceusb: fix NULL-deref at probe

to the 4.9-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:
     mceusb-fix-null-deref-at-probe.patch
and it can be found in the queue-4.9 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 03eb2a557ed552e920a0942b774aaf931596eec1 Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan@kernel.org>
Date: Tue, 7 Mar 2017 15:14:13 -0300
Subject: [media] mceusb: fix NULL-deref at probe

From: Johan Hovold <johan@kernel.org>

commit 03eb2a557ed552e920a0942b774aaf931596eec1 upstream.

Make sure to check for the required out endpoint to avoid dereferencing
a NULL-pointer in mce_request_packet should a malicious device lack such
an endpoint. Note that this path is hit during probe.

Fixes: 66e89522aff7 ("V4L/DVB: IR: add mceusb IR receiver driver")

Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/media/rc/mceusb.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/media/rc/mceusb.c
+++ b/drivers/media/rc/mceusb.c
@@ -1332,8 +1332,8 @@ static int mceusb_dev_probe(struct usb_i
 			}
 		}
 	}
-	if (ep_in == NULL) {
-		dev_dbg(&intf->dev, "inbound and/or endpoint not found");
+	if (!ep_in || !ep_out) {
+		dev_dbg(&intf->dev, "required endpoints not found\n");
 		return -ENODEV;
 	}
 


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

queue-4.9/usb-serial-io_ti-fix-div-by-zero-in-set_termios.patch
queue-4.9/usb-chaoskey-fix-alea-quirk-on-big-endian-hosts.patch
queue-4.9/usb-hub-fix-non-ss-hub-descriptor-handling.patch
queue-4.9/usb-serial-ftdi_sio-add-olimex-arm-usb-tiny-h-pids.patch
queue-4.9/usb-serial-ftdi_sio-fix-setting-latency-for-unprivileged-users.patch
queue-4.9/usb-iowarrior-fix-info-ioctl-on-big-endian-hosts.patch
queue-4.9/watchdog-pcwd_usb-fix-null-deref-at-probe.patch
queue-4.9/usb-serial-qcserial-add-more-lenovo-em74xx-device-ids.patch
queue-4.9/usb-serial-option-add-telit-me910-support.patch
queue-4.9/net-irda-irda-usb-fix-firmware-name-on-big-endian-hosts.patch
queue-4.9/of-fdt-add-missing-allocation-failure-check.patch
queue-4.9/usbvision-fix-null-deref-at-probe.patch
queue-4.9/usb-serial-mct_u232-fix-big-endian-baud-rate-handling.patch
queue-4.9/usb-ehci-platform-fix-companion-device-leak.patch
queue-4.9/mceusb-fix-null-deref-at-probe.patch
queue-4.9/usb-hub-fix-ss-hub-descriptor-handling.patch
queue-4.9/ath9k_htc-fix-null-deref-at-probe.patch
queue-4.9/usb-musb-fix-trying-to-suspend-while-active-for-otg-configurations.patch