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Message-ID: <202009101615.8566BA3967@keescook>
Date: Thu, 10 Sep 2020 16:18:08 -0700
From: Kees Cook <keescook@...omium.org>
To: kernel-hardening@...ts.openwall.com
Cc: John Wood <john.wood@....com>, Matthew Wilcox <willy@...radead.org>,
Jonathan Corbet <corbet@....net>,
Alexander Viro <viro@...iv.linux.org.uk>,
Ingo Molnar <mingo@...hat.com>,
Peter Zijlstra <peterz@...radead.org>,
Juri Lelli <juri.lelli@...hat.com>,
Vincent Guittot <vincent.guittot@...aro.org>,
Dietmar Eggemann <dietmar.eggemann@....com>,
Steven Rostedt <rostedt@...dmis.org>,
Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>,
Luis Chamberlain <mcgrof@...nel.org>,
Iurii Zaikin <yzaikin@...gle.com>, James Morris <jmorris@...ei.org>,
"Serge E. Hallyn" <serge@...lyn.com>, linux-doc@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
linux-security-module@...r.kernel.org
Subject: Re: [RFC PATCH 1/6] security/fbfam: Add a Kconfig to enable the
fbfam feature
On Thu, Sep 10, 2020 at 01:21:02PM -0700, Kees Cook wrote:
> From: John Wood <john.wood@....com>
>
> Add a menu entry under "Security options" to enable the "Fork brute
> force attack mitigation" feature.
>
> Signed-off-by: John Wood <john.wood@....com>
> ---
> security/Kconfig | 1 +
> security/fbfam/Kconfig | 10 ++++++++++
> 2 files changed, 11 insertions(+)
> create mode 100644 security/fbfam/Kconfig
>
> diff --git a/security/Kconfig b/security/Kconfig
> index 7561f6f99f1d..00a90e25b8d5 100644
> --- a/security/Kconfig
> +++ b/security/Kconfig
> @@ -290,6 +290,7 @@ config LSM
> If unsure, leave this as the default.
>
> source "security/Kconfig.hardening"
> +source "security/fbfam/Kconfig"
Given the layout you've chosen and the interface you've got, I think
this should just be treated like a regular LSM.
>
> endmenu
>
> diff --git a/security/fbfam/Kconfig b/security/fbfam/Kconfig
> new file mode 100644
> index 000000000000..bbe7f6aad369
> --- /dev/null
> +++ b/security/fbfam/Kconfig
> @@ -0,0 +1,10 @@
> +# SPDX-License-Identifier: GPL-2.0
> +config FBFAM
To jump on the bikeshed: how about just calling this
FORK_BRUTE_FORCE_DETECTION or FORK_BRUTE, and the directory could be
"brute", etc. "fbfam" doesn't tell anyone anything.
--
Kees Cook
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