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Message-ID: <CA+55aFzvaFR1skBFKwT1QPnKqxaLqCuq33FCuYz8DP7MjKkgNg@mail.gmail.com>
Date: Tue, 28 Nov 2017 12:12:21 -0800
From: Linus Torvalds <torvalds@...ux-foundation.org>
To: Kees Cook <keescook@...omium.org>
Cc: "Theodore Ts'o" <tytso@....edu>, Djalal Harouni <tixxdz@...il.com>, Jonathan Corbet <corbet@....net>,
James Morris <james.l.morris@...cle.com>,
LSM List <linux-security-module@...r.kernel.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
"kernel-hardening@...ts.openwall.com" <kernel-hardening@...ts.openwall.com>, Geo Kozey <geokozey@...lfence.com>
Subject: Re: Re: [PATCH v5 next 5/5] net: modules: use
request_module_cap() to load 'netdev-%s' modules
On Tue, Nov 28, 2017 at 12:08 PM, Kees Cook <keescook@...omium.org> wrote:
>
> Linus, are you okay with this series if the global sysctl gets dropped?
So really, it's not the "global sysctl" as much as the "global
request_module()" that annoys me.
I'll happily take the request_module_cap() part and the thing that
makes networking use that.
But the flag that we have to default to off because it breaks every
single box otherwise? No. It doesn't matter if it's one single global
or just a "global behavior for request_module() for this process" at
that point, it's still a pointless security flag that is opt-in.
Linus
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