From: Cameron Gutman Date: Wed, 29 Jun 2016 16:51:35 +0000 (-0700) Subject: Input: xpad - validate USB endpoint count during probe X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=caca925fca4fb30c67be88cacbe908eec6721e43;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git Input: xpad - validate USB endpoint count during probe This prevents a malicious USB device from causing an oops. Signed-off-by: Cameron Gutman Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov --- diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c index 3438e98c145a..a529a4535457 100644 --- a/drivers/input/joystick/xpad.c +++ b/drivers/input/joystick/xpad.c @@ -1431,6 +1431,9 @@ 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))