Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933074AbdDQGHr (ORCPT ); Mon, 17 Apr 2017 02:07:47 -0400 Received: from relay2-d.mail.gandi.net ([217.70.183.194]:38845 "EHLO relay2-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932797AbdDQGHo (ORCPT ); Mon, 17 Apr 2017 02:07:44 -0400 X-Originating-IP: 72.66.113.207 From: Matt Brown To: jmorris@namei.org, gregkh@linuxfoundation.org, akpm@linux-foundation.org Cc: linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-hardening@lists.openwall.com, Matt Brown Subject: [PATCH 1/4] added SECURITY_TIOCSTI_RESTRICT kernel config Date: Mon, 17 Apr 2017 02:07:03 -0400 Message-Id: <20170417060706.28674-2-matt@nmatt.com> X-Mailer: git-send-email 2.10.2 In-Reply-To: <20170417060706.28674-1-matt@nmatt.com> References: <20170417060706.28674-1-matt@nmatt.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1078 Lines: 34 adding the kernel config SECURITY_TIOCSTI_RESTRICT in order to allow the user to restrict unprivileged command injection using TIOCSTI tty ioctls Signed-off-by: Matt Brown --- security/Kconfig | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/security/Kconfig b/security/Kconfig index 3ff1bf9..d757bcb 100644 --- a/security/Kconfig +++ b/security/Kconfig @@ -18,6 +18,18 @@ config SECURITY_DMESG_RESTRICT If you are unsure how to answer this question, answer N. +config SECURITY_TIOCSTI_RESTRICT + bool "Restrict unprivileged use of tiocsti command injection" + default n + help + This enforces restrictions on unprivileged users injecting commands + into other processes in the same tty session using the TIOCSTI ioctl + + If this option is not selected, no restrictions will be enforced + unless the tiocsti_restrict sysctl is explicitly set to (1). + + If you are unsure how to answer this question, answer N. + config SECURITY bool "Enable different security models" depends on SYSFS -- 2.10.2