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Message-ID: <CAGXu5jKvTUkU5qLf+j9aB8G2xqKm7n3QLPBXaGnk_ewhG6=i_g@mail.gmail.com>
Date: Mon, 5 Mar 2018 11:34:42 -0800
From: Kees Cook <keescook@...omium.org>
To: Alexander Popov <alex.popov@...ux.com>, Dave Hansen <dave.hansen@...ux.intel.com>,
Borislav Petkov <bp@...en8.de>, Andy Lutomirski <luto@...nel.org>
Cc: Kernel Hardening <kernel-hardening@...ts.openwall.com>, PaX Team <pageexec@...email.hu>,
Brad Spengler <spender@...ecurity.net>, Ingo Molnar <mingo@...nel.org>,
Tycho Andersen <tycho@...ho.ws>, Laura Abbott <labbott@...hat.com>, Mark Rutland <mark.rutland@....com>,
Ard Biesheuvel <ard.biesheuvel@...aro.org>, Richard Sandiford <richard.sandiford@....com>,
Thomas Gleixner <tglx@...utronix.de>, "H . Peter Anvin" <hpa@...or.com>,
Peter Zijlstra <a.p.zijlstra@...llo.nl>, "Dmitry V . Levin" <ldv@...linux.org>,
Emese Revfy <re.emese@...il.com>, Jonathan Corbet <corbet@....net>,
Andrey Ryabinin <aryabinin@...tuozzo.com>,
"Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>, Thomas Garnier <thgarnie@...gle.com>,
Andrew Morton <akpm@...ux-foundation.org>, Alexei Starovoitov <ast@...nel.org>, Josef Bacik <jbacik@...com>,
Masami Hiramatsu <mhiramat@...nel.org>, Nicholas Piggin <npiggin@...il.com>,
Al Viro <viro@...iv.linux.org.uk>, "David S . Miller" <davem@...emloft.net>,
Ding Tianhong <dingtianhong@...wei.com>, David Woodhouse <dwmw@...zon.co.uk>,
Josh Poimboeuf <jpoimboe@...hat.com>, Steven Rostedt <rostedt@...dmis.org>,
Dominik Brodowski <linux@...inikbrodowski.net>, Juergen Gross <jgross@...e.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Dan Williams <dan.j.williams@...el.com>,
Mathias Krause <minipli@...glemail.com>, Vikas Shivappa <vikas.shivappa@...ux.intel.com>,
Kyle Huey <me@...ehuey.com>, Dmitry Safonov <dsafonov@...tuozzo.com>,
Will Deacon <will.deacon@....com>, Arnd Bergmann <arnd@...db.de>, X86 ML <x86@...nel.org>,
LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH RFC v9 0/7] Introduce the STACKLEAK feature and a test for it
On Sat, Mar 3, 2018 at 12:00 PM, Alexander Popov <alex.popov@...ux.com> wrote:
> This is the 9th version of the patch series introducing STACKLEAK to the
> mainline kernel. STACKLEAK is a security feature developed by Grsecurity/PaX
> (kudos to them), which:
> - reduces the information that can be revealed through kernel stack leak bugs;
> - blocks some uninitialized stack variable attacks (e.g. CVE-2017-17712,
> CVE-2010-2963);
> - introduces some runtime checks for kernel stack overflow detection.
Thanks for continuing to chip away at this! I wonder if it's time to
drop the "RFC" part of this? It seems like this should be ready to
land pretty soon. I can start carrying this in the kspp -next tree,
for example. I'd like to get some sign-off from x86, though.
Boris, Andy, and Dave (Hansen), you've all looked at this; would you
be willing to give an Ack on the x86 parts? (Though I do now see a new
comment from Dave was just sent.) And if not, what changes would you
like to see?
-Kees
--
Kees Cook
Pixel Security
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