diff options
| author | Arvind Yadav <arvind.yadav.cs@gmail.com> | 2017-10-09 20:14:48 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-11-21 09:21:17 +0100 |
| commit | c344019c48a92e559b7f910e53e0c6f9018680fb (patch) | |
| tree | 9b61a5f5c45d0ef5da17edaed9f7e79adc3ca254 /drivers/media/rc/imon.c | |
| parent | 0cbac004e67307949714c176c8a7af9c1da980b9 (diff) | |
media: imon: Fix null-ptr-deref in imon_probe
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@gmail.com>
Tested-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Cc: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/media/rc/imon.c')
| -rw-r--r-- | drivers/media/rc/imon.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/media/rc/imon.c b/drivers/media/rc/imon.c index eb9e7feb9b13..7a16e9ea041c 100644 --- a/drivers/media/rc/imon.c +++ b/drivers/media/rc/imon.c @@ -2419,6 +2419,11 @@ static int imon_probe(struct usb_interface *interface, 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) { |