diff options
| author | Cameron Gutman <aicommander@gmail.com> | 2016-06-29 09:51:35 -0700 |
|---|---|---|
| committer | Sasha Levin <alexander.levin@verizon.com> | 2016-08-03 11:38:19 -0400 |
| commit | 07761df8a174a27d498d87f0000409603627bb3c (patch) | |
| tree | 92d14036a1fd0fdd5e2910e2609df91d9feb9f26 | |
| parent | 70aaf49b1e719d3d25b9480a151133d00da00f49 (diff) | |
Input: xpad - validate USB endpoint count during probe
[ Upstream commit caca925fca4fb30c67be88cacbe908eec6721e43 ]
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>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
| -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 61c761156371..a450c4ee1217 100644 --- a/drivers/input/joystick/xpad.c +++ b/drivers/input/joystick/xpad.c @@ -1025,6 +1025,9 @@ 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)) |