diff options
| author | Johan Hovold <johan@kernel.org> | 2017-03-16 11:34:02 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-03-30 09:35:14 +0200 |
| commit | a07d3669654ad335c19df048199da0a063e0c387 (patch) | |
| tree | 5c4eb5d696cdbb9857c542a8a5609c551920d11a | |
| parent | 5f9243e4fca610599c30b552baacdcffc76ea7af (diff) | |
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>
| -rw-r--r-- | drivers/input/joystick/iforce/iforce-usb.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/input/joystick/iforce/iforce-usb.c b/drivers/input/joystick/iforce/iforce-usb.c index d96aa27dfcdc..db64adfbe1af 100644 --- a/drivers/input/joystick/iforce/iforce-usb.c +++ b/drivers/input/joystick/iforce/iforce-usb.c @@ -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; |