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From:   John Wood <john.wood@gmx.com>
To:     Matthew Wilcox <willy@infradead.org>
Cc:     John Wood <john.wood@gmx.com>
Subject: [RFC PATCH 1/9] security/fbfam: Add a Kconfig to enable the fbfam feature
Date:   Sun,  6 Sep 2020 17:21:27 +0200
Message-Id: <20200906152127.7041-1-john.wood@gmx.com>
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Add a menu entry under "Security options" to enable the "Fork brute
force attack mitigation" feature.

Signed-off-by: John Wood <john.wood@gmx.com>
=2D--
 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
=2D-- 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
=2D-- /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.
=2D-
2.25.1