int usb_bulk_msg(struct usb_device *usb_dev, unsigned int pipe,
		 void *data, int len, int *actual_length, int timeout)
{
	struct urb *urb;
	struct usb_host_endpoint *ep;

	ep = usb_pipe_endpoint(usb_dev, pipe);
	if (!ep || len < 0)
		return -EINVAL;

	urb = usb_alloc_urb(0, GFP_KERNEL);
	if (!urb)
		return -ENOMEM;

	if ((ep->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
			USB_ENDPOINT_XFER_INT) {
		pipe = (pipe & ~(3 << 30)) | (PIPE_INTERRUPT << 30);
		usb_fill_int_urb(urb, usb_dev, pipe, data, len,
				usb_api_blocking_completion, NULL,
				ep->desc.bInterval);
	} else
		usb_fill_bulk_urb(urb, usb_dev, pipe, data, len,
				usb_api_blocking_completion, NULL);

	return usb_start_wait_urb(urb, timeout, actual_length);
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.