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From:   Kees Cook <keescook@chromium.org>
To:     kernel-hardening@lists.openwall.com
Cc:     Kees Cook <keescook@chromium.org>, John Wood <john.wood@gmx.com>,
        Matthew Wilcox <willy@infradead.org>,
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        linux-security-module@vger.kernel.org
Subject: [RFC PATCH 1/6] security/fbfam: Add a Kconfig to enable the fbfam feature
Date:   Thu, 10 Sep 2020 13:21:02 -0700
Message-Id: <20200910202107.3799376-2-keescook@chromium.org>
In-Reply-To: <20200910202107.3799376-1-keescook@chromium.org>
References: <20200910202107.3799376-1-keescook@chromium.org>
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From: John Wood <john.wood@gmx.com>

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>
---
 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