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Message-Id: <20200910202107.3799376-2-keescook@chromium.org>
Date: Thu, 10 Sep 2020 13:21:02 -0700
From: Kees Cook <keescook@...omium.org>
To: kernel-hardening@...ts.openwall.com
Cc: Kees Cook <keescook@...omium.org>,
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: [RFC PATCH 1/6] security/fbfam: Add a Kconfig to enable the fbfam feature
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"
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
+ bool "Fork brute force attack mitigation"
+ default n
+ help
+ This is a user defense that detects any fork brute force attack
+ based on the application's crashing rate. When this measure is
+ triggered the fork system call is blocked.
+
+ If you are unsure how to answer this question, answer N.
--
2.25.1
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