From 0c55627167870255158db1cde0d28366f91c8872 Mon Sep 17 00:00:00 2001
From: Jann Horn <jann@thejh.net>
Date: Sun, 4 Oct 2015 19:29:12 +0200
Subject: [PATCH] drivers/tty: require read access for controlling terminal

This is mostly a hardening fix, given that write-only access to other
users' ttys is usually only given through setgid tty executables.

Signed-off-by: Jann Horn <jann@thejh.net>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Reading git-format-patch failed