Merge remote-tracking branch 'remotes/kraxel/tags/pull-usb-20140613-1' into staging

usb-host: add range checks for usb-host parameters

# gpg: Signature made Fri 13 Jun 2014 12:33:05 BST using RSA key ID D3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"

* remotes/kraxel/tags/pull-usb-20140613-1:
  usb-host: add range checks for usb-host parameters
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

hw/usb/host-libusb.c

@@ -952,6 +952,19 @@ static int usb_host_initfn(USBDevice *udev)
 {
     USBHostDevice *s = USB_HOST_DEVICE(udev);
 
+    if (s->match.vendor_id > 0xffff) {
+        error_report("vendorid out of range");
+        return -1;
+    }
+    if (s->match.product_id > 0xffff) {
+        error_report("productid out of range");
+        return -1;
+    }
+    if (s->match.addr > 127) {
+        error_report("hostaddr out of range");
+        return -1;
+    }
+
     loglevel = s->loglevel;
     udev->flags |= (1 << USB_DEV_FLAG_IS_HOST);
     udev->auto_attach = 0;