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Message-ID: <alpine.LRH.2.20.1704192114270.12914@namei.org>
Date: Wed, 19 Apr 2017 21:18:13 +1000 (AEST)
From: James Morris <jmorris@...ei.org>
To: Matt Brown <matt@...tt.com>
cc: serge@...lyn.com, gregkh@...uxfoundation.org, jslaby@...e.com,
akpm@...ux-foundation.org, jannh@...gle.com, keescook@...omium.org,
kernel-hardening@...ts.openwall.com,
linux-security-module@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] make TIOCSTI ioctl require CAP_SYS_ADMIN
On Tue, 18 Apr 2017, Matt Brown wrote:
> This patch reproduces GRKERNSEC_HARDEN_TTY functionality from the grsecurity
> project in-kernel.
It seems like an ugly hack to an ugly feature (CAP_SYS_ADMIN barely makes
sense here), and rather than sprinkling these types of things throughout
the kernel, I wonder if it might be better to implement it via LSM, in the
YAMA module.
- James
--
James Morris
<jmorris@...ei.org>
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