This is a note to let you know that I've just added the patch titled
media: imon: Fix null-ptr-deref in imon_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:
media-imon-fix-null-ptr-deref-in-imon_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@xxxxxxxxxxxxxxx> know about it.
>From 58fd55e838276a0c13d1dc7c387f90f25063cbf3 Mon Sep 17 00:00:00 2001
From: Arvind Yadav <arvind.yadav.cs@xxxxxxxxx>
Date: Mon, 9 Oct 2017 20:14:48 +0200
Subject: media: imon: Fix null-ptr-deref in imon_probe
From: Arvind Yadav <arvind.yadav.cs@xxxxxxxxx>
commit 58fd55e838276a0c13d1dc7c387f90f25063cbf3 upstream.
It seems that the return value of usb_ifnum_to_if() can be NULL and
needs to be checked.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@xxxxxxxxx>
Tested-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
Signed-off-by: Sean Young <sean@xxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxx>
Cc: Ben Hutchings <ben.hutchings@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/media/rc/imon.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/media/rc/imon.c
+++ b/drivers/media/rc/imon.c
@@ -2419,6 +2419,11 @@ static int imon_probe(struct usb_interfa
mutex_lock(&driver_lock);
first_if = usb_ifnum_to_if(usbdev, 0);
+ if (!first_if) {
+ ret = -ENODEV;
+ goto fail;
+ }
+
first_if_ctx = usb_get_intfdata(first_if);
if (ifnum == 0) {
Patches currently in stable-queue which might be from arvind.yadav.cs@xxxxxxxxx are
queue-4.4/media-imon-fix-null-ptr-deref-in-imon_probe.patch