The vmsplice local root exploit

There are some Critical Linux kernel vmsplice security issues that hopefully have been patched properly. See also #27704 on SecurityFocus. Fortunately the kernel on this server is too old to be affected! 🙂

$ ./27704
-----------------------------------
 Linux vmsplice Local Root Exploit
 By qaaz
-----------------------------------
[+] mmap: 0x0 .. 0x1000
[+] page: 0x0
[+] page: 0x20
[+] mmap: 0x4000 .. 0x5000
[+] page: 0x4000
[+] page: 0x4020
[+] mmap: 0x1000 .. 0x2000
[+] page: 0x1000
[+] mmap: 0xb7d8b000 .. 0xb7dbd000
[-] vmsplice: Function not implemented
$ ./27704-2
-----------------------------------
 Linux vmsplice Local Root Exploit
 By qaaz
-----------------------------------
[+] addr: 0xc0106340
[-] wtf

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