diff options
| author | Cameron Gutman <aicommander@gmail.com> | 2016-06-29 09:51:35 -0700 |
|---|---|---|
| committer | Jiri Slaby <jslaby@suse.cz> | 2016-08-19 09:50:55 +0200 |
| commit | 07c6f70c1c2f46977686f6c465badca6b5bd8448 (patch) | |
| tree | 24b70d8505d21c0f76e1f8ced24cfbc4f74493c7 /drivers/input | |
| parent | 1b59979d01c2d0f332963ec283cd8c10d9da00e2 (diff) | |
Input: xpad - validate USB endpoint count during probe
commit caca925fca4fb30c67be88cacbe908eec6721e43 upstream.
This prevents a malicious USB device from causing an oops.
Signed-off-by: Cameron Gutman <aicommander@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Diffstat (limited to 'drivers/input')
| -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 94d8cb9b4981..5be10fb2edf2 100644 --- a/drivers/input/joystick/xpad.c +++ b/drivers/input/joystick/xpad.c @@ -1026,6 +1026,9 @@ 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)) |