diff options
| author | Johan Hovold <johan@kernel.org> | 2017-03-13 13:47:49 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-03-14 17:07:30 +0800 |
| commit | 1dc56c52d2484be09c7398a5207d6b11a4256be9 (patch) | |
| tree | 25c58e611964f67a971a199db3583dae75d3fb5e /drivers/usb | |
| parent | b0addd3fa6bcd119be9428996d5d4522479ab240 (diff) | |
USB: lvtest: fix NULL-deref at probe
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: stable <stable@vger.kernel.org> # 3.17
Cc: Pratyush Anand <pratyush.anand@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/misc/lvstest.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/misc/lvstest.c b/drivers/usb/misc/lvstest.c index 77176511658f..d3d124753266 100644 --- a/drivers/usb/misc/lvstest.c +++ b/drivers/usb/misc/lvstest.c @@ -366,6 +366,10 @@ static int lvs_rh_probe(struct usb_interface *intf, 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 */ |