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Input: xpad - validate USB endpoint count during probe

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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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
This commit is contained in:
Cameron Gutman
2016-06-29 09:51:35 -07:00
committed by Willy Tarreau
parent 2ae02f0372
commit 0378ecf174
1 changed files with 3 additions and 0 deletions
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drivers/input/joystick/xpad.c
+3
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@@ -843,6 +843,9 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id
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))