Message ID | 20170313123539.28103-3-johan@kernel.org (mailing list archive) |
---|---|
State | Accepted |
Headers | show |
diff --git a/drivers/input/misc/cm109.c b/drivers/input/misc/cm109.c index 9cc6d057c302..23c191a2a071 100644 --- a/drivers/input/misc/cm109.c +++ b/drivers/input/misc/cm109.c @@ -700,6 +700,10 @@ static int cm109_usb_probe(struct usb_interface *intf, int error = -ENOMEM; interface = intf->cur_altsetting; + + if (interface->desc.bNumEndpoints < 1) + return -ENODEV; + endpoint = &interface->endpoint[0].desc; if (!usb_endpoint_is_int_in(endpoint))
Make sure to check the number of endpoints to avoid dereferencing a NULL-pointer should a malicious device lack endpoints. Fixes: c04148f915e5 ("Input: add driver for USB VoIP phones with CM109 chipset") Cc: stable <stable@vger.kernel.org> # 2.6.28 Cc: Alfred E. Heggestad <aeh@db.org> Signed-off-by: Johan Hovold <johan@kernel.org> --- drivers/input/misc/cm109.c | 4 ++++ 1 file changed, 4 insertions(+)