Commit 0afac79f authored Mar 16, 2017 by Johan Hovold Committed by Greg Kroah-Hartman Mar 30, 2017

Input: iforce - validate number of endpoints before using them



commit 59cf8bed44a79ec42303151dd014fdb6434254bb upstream.

Make sure to check the number of endpoints to avoid dereferencing a
NULL-pointer or accessing memory that lie beyond the end of the endpoint
array should a malicious device lack the expected endpoints.

Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent de2ba808

drivers/input/joystick/iforce/iforce-usb.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -141,6 +141,9 @@ static int iforce_usb_probe(struct usb_interface *intf,

		interface = intf->cur_altsetting;

		if (interface->desc.bNumEndpoints < 2)
		return -ENODEV;

		epirq = &interface->endpoint[0].desc;
		epout = &interface->endpoint[1].desc;