diff options
| author | Cameron Gutman <aicommander@gmail.com> | 2016-06-29 09:51:35 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2016-06-29 10:07:47 -0700 |
| commit | caca925fca4fb30c67be88cacbe908eec6721e43 (patch) | |
| tree | f3a0cee72b30fdb96e316f39b42516481eb399b6 /drivers/input/joystick | |
| parent | 9a9b6aa6a8759c83024627d681eff982d6ee03b7 (diff) | |
Input: xpad - validate USB endpoint count during probe
This prevents a malicious USB device from causing an oops.
Signed-off-by: Cameron Gutman <aicommander@gmail.com>
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/xpad.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c index 3438e98c145a..a529a4535457 100644 --- a/drivers/input/joystick/xpad.c +++ b/drivers/input/joystick/xpad.c @@ -1431,6 +1431,9 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id int ep_irq_in_idx; int i, error; + if (intf->cur_altsetting->desc.bNumEndpoints != 2) + return -ENODEV; + for (i = 0; xpad_device[i].idVendor; i++) { if ((le16_to_cpu(udev->descriptor.idVendor) == xpad_device[i].idVendor) && (le16_to_cpu(udev->descriptor.idProduct) == xpad_device[i].idProduct)) |