/*
 * CVE-2012-2122 checker
 *
 * You may get differing results with/without -m32
 *
 * Joshua J. Drake
 */

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <sys/types.h>
#include <unistd.h>
#include <string.h>

int main(void) {
        int one, two, ret;
        time_t start = time(0);
        time_t now;

        srand(getpid()*start);
        while (1) {
                one = rand();
                two = rand();
                ret = memcmp(&one, &two, sizeof(int));
                if (ret < -128 || ret > 127)
                        break;
                time(&now);
                if (now - start > 10) {
                        printf("Not triggered in 10 seconds, *probably* not vulnerable..\n");
                        return 1;
                }
        }
        printf("Vulnerable! memcmp returned: %d\n", ret);
        return 0;
}

代码来源：http://pastie.org/4064638