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| author | Johan Hovold <johan@kernel.org> | 2017-03-16 11:34:02 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2017-03-16 13:56:45 -0700 |
| commit | 59cf8bed44a79ec42303151dd014fdb6434254bb (patch) | |
| tree | 7dc877eb9272ff0aade62aa70e9a56f9a6393644 /drivers/input/joystick | |
| parent | 92ef6f97a66e580189a41a132d0f8a9f78d6ddce (diff) | |
| download | linux-59cf8bed44a79ec42303151dd014fdb6434254bb.tar.bz2 | |
Input: iforce - validate number of endpoints before using them
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>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/joystick')
| -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; |