3.14-stable review patch. If anyone has any objections, please let me know.
------------------
From: Cameron Gutman <aicommander@xxxxxxxxx>
commit caca925fca4fb30c67be88cacbe908eec6721e43 upstream.
This prevents a malicious USB device from causing an oops.
Signed-off-by: Cameron Gutman <aicommander@xxxxxxxxx>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/input/joystick/xpad.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/input/joystick/xpad.c
+++ b/drivers/input/joystick/xpad.c
@@ -844,6 +844,9 @@ static int xpad_probe(struct usb_interfa
struct usb_endpoint_descriptor *ep_irq_in;
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))
--
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