Commit 07761df8 authored by Cameron Gutman's avatar Cameron Gutman Committed by Sasha Levin

Input: xpad - validate USB endpoint count during probe

[ Upstream commit caca925f ]

This prevents a malicious USB device from causing an oops.
Signed-off-by: default avatarCameron Gutman <aicommander@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: default avatarSasha Levin <alexander.levin@verizon.com>
parent 70aaf49b
......@@ -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))
......
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