Commit d1f5902b authored by Johan Hovold's avatar Johan Hovold Committed by Greg Kroah-Hartman

Input: cm109 - validate number of endpoints before using them

commit ac2ee9ba upstream.

Make sure to check the number of endpoints to avoid dereferencing a
NULL-pointer should a malicious device lack endpoints.

Fixes: c04148f9 ("Input: add driver for USB VoIP phones with CM109...")
Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 6139f43c
......@@ -675,6 +675,10 @@ 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))
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment