Re: Serious local root exploit in linux kernel

[Vincent Lefevre <vincent@vinc17.org>]

On 2008-02-11 14:26:59 +0100, Rorist wrote:
> Just tried on 2.6.23-1-amd64 and it works.

This is strange because here it doesn't work:

vin:~tmp> uname -a
Linux vin 2.6.23.13-ws-intel64-p4 #1 SMP PREEMPT Mon Jan 28 23:40:29 CET 2008 x86_64 GNU/Linux
vin:~tmp> ./root_expl
-----------------------------------
 Linux vmsplice Local Root Exploit
 By qaaz
-----------------------------------
[+] mmap: 0x100000000000 .. 0x100000001000
[+] page: 0x100000000000
[+] page: 0x100000000038
[+] mmap: 0x4000 .. 0x5000
[+] page: 0x4000
[+] page: 0x4038
[+] mmap: 0x1000 .. 0x2000
[+] page: 0x1000
[+] mmap: 0x2b1c1cef1000 .. 0x2b1c1cf23000
zsh: illegal hardware instruction (core dumped)  ./root_expl

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Vincent Lefèvre <vincent@vinc17.org> - Web: <http://www.vinc17.org/>
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Work: CR INRIA - computer arithmetic / Arenaire project (LIP, ENS-Lyon)