libXi: Multiple integer overflows leading to heap-based buffer-overflows

Multiple integer overflows in X.org libXi 1.7.1 and earlier allow X servers to trigger allocation of insufficient memory and a buffer overflow via vectors related to the 1 XGetDeviceControl, 2 XGetFeedbackControl, 3 XGetDeviceDontPropagateList, 4 XGetDeviceMotionEvents, 5 XIGetProperty, 6...