Date: Mon, 20 Jul 2009 15:29:09 +0400 From: Solar Designer <solar@...nwall.com> To: oss-security@...ts.openwall.com Subject: Re: Linux 2.6.30+/SELinux/RHEL5 test kernel 0day, exploiting the unexploitable Marcus, On Mon, Jul 20, 2009 at 12:01:47PM +0200, Marcus Meissner wrote: > - fixed the personality - PER_CLEAR_ON_SETTID inheritance issue (CVE-2009-1895) > to work around mmap_min_addr protection. > Affects 2.6.23-220.127.116.11 What makes you think this does not affect earlier kernels? This does not match my analysis, but maybe I am missing something, hence I ask. BTW, as you're aware, this fix is a hardening measure for/against SUID-root programs with a certain class of design errors in them; it is not exactly a fix for the kernel itself, although it should be in the kernel. I do not mean to downplay the issue, but I think it is important that we distinguish the different types of changes that we are making in response to Brad's exploit. Alexander
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