Commit aee563c5 authored by Johan Hovold's avatar Johan Hovold Committed by Sasha Levin

USB: lvtest: fix NULL-deref at probe

[ Upstream commit 1dc56c52 ]

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: ce21bfe6 ("USB: Add LVS Test device driver")
Cc: stable <stable@vger.kernel.org>     # 3.17
Cc: Pratyush Anand <pratyush.anand@gmail.com>
Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarSasha Levin <alexander.levin@verizon.com>
parent a2574cf7
...@@ -370,6 +370,10 @@ static int lvs_rh_probe(struct usb_interface *intf, ...@@ -370,6 +370,10 @@ static int lvs_rh_probe(struct usb_interface *intf,
hdev = interface_to_usbdev(intf); hdev = interface_to_usbdev(intf);
desc = intf->cur_altsetting; desc = intf->cur_altsetting;
if (desc->desc.bNumEndpoints < 1)
return -ENODEV;
endpoint = &desc->endpoint[0].desc; endpoint = &desc->endpoint[0].desc;
/* valid only for SS root hub */ /* valid only for SS root hub */
......
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