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Linux 2.6.30 exploit postedLinux 2.6.30 exploit postedPosted Jul 17, 2009 14:39 UTC (Fri) by trasz (guest, #45786)In reply to: Linux 2.6.30 exploit posted by regala Parent article: Linux 2.6.30 exploit posted
This code wouldn't be valid in SMP or in preemptible kernel either, unless some locking was added, which would completely change the situation and would probably prevent the problematic optimization from being applied. Other possible way would be to make the variable volatile. Anyway, this is a programming error.
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Linux 2.6.30 exploit posted Posted Jul 17, 2009 14:56 UTC (Fri) by spender (subscriber, #23067) [Link]
Well, since my videos show me exploiting the bug on multiple SMP and preemptible kernels, that's false. If you would read the exploit source you'd see this.
-Brad
Linux 2.6.30 exploit posted Posted Jul 17, 2009 15:08 UTC (Fri) by trasz (guest, #45786) [Link]
Erm, let me restate what I've written above - the kernel code mentioned above wouldn't be valid in any case, including SMP and preemptible kernel, contrary to what Regala said in the comment before.
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