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Date: Mon, 27 Jul 2015 11:38:38 +0100
From: Luis Henriques <luis.henriques@...onical.com>
To: oss-security@...ts.openwall.com
Cc: Josh Boyer <jwboyer@...oraproject.org>
Subject: Re: Re: Linux x86_64 NMI security issues
On Fri, Jul 24, 2015 at 11:12:48PM -0700, Andy Lutomirski wrote:
> On 07/24/2015 07:16 AM, Josh Boyer wrote:
> > On Wed, Jul 22, 2015 at 2:12 PM, Andy Lutomirski <luto@...capital.net> wrote:
> >> Note: Several of these fixes each depend on a few patches immediately
> >> before them. The NMI stack switching fix also depends on changes made
> >> in 4.2 and will appear to apply but crash on older kernels. I have a
> >> different variant that's more portable.
> >
> > Given that none of these are going to apply cleanly on older kernels,
> > do you have backports available for 4.1.y and the longterm stable
> > kernels?
> >
>
> There's this:
>
> https://git.kernel.org/cgit/linux/kernel/git/luto/linux.git/commit/?h=x86/nmi-backport
>
> which is a combined effort of me and Ben Hutchings. It's not synced up
> to the fixes in Linus' tree.
>
Thank you all for working on these backports. I'm planning to use
them (and more specifically the patches in the Debian kernel) for the
3.16 stable kernel.
Cheers,
--
Luís
> Note that even Linus' tree doesn't have the synchronous modify_ldt fix
> yet. I sent a hopefully final version of that out a few minutes ago.
>
> --Andy
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