Patch "console/dummy: leave .con_font_get set to NULL" has been added to the 4.9-stable tree

Patch "console/dummy: leave .con_font_get set to NULL" has been added to the 4.9-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    console/dummy: leave .con_font_get set to NULL

to the 4.9-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     console-dummy-leave-.con_font_get-set-to-null.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 724ba8b30b044aa0d94b1cd374fc15806cdd6f18 Mon Sep 17 00:00:00 2001
From: Nicolas Pitre <nicolas.pitre@linaro.org>
Date: Mon, 15 Jan 2018 17:04:22 +0100
Subject: console/dummy: leave .con_font_get set to NULL

From: Nicolas Pitre <nicolas.pitre@linaro.org>

commit 724ba8b30b044aa0d94b1cd374fc15806cdd6f18 upstream.

When this method is set, the caller expects struct console_font fields
to be properly initialized when it returns. Leave it unset otherwise
nonsensical (leaked kernel stack) values are returned to user space.

Signed-off-by: Nicolas Pitre <nico@linaro.org>
Cc: stable@vger.kernel.org
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/video/console/dummycon.c |    1 -
 1 file changed, 1 deletion(-)

--- a/drivers/video/console/dummycon.c
+++ b/drivers/video/console/dummycon.c
@@ -67,7 +67,6 @@ const struct consw dummy_con = {
     .con_switch =	DUMMY,
     .con_blank =	DUMMY,
     .con_font_set =	DUMMY,
-    .con_font_get =	DUMMY,
     .con_font_default =	DUMMY,
     .con_font_copy =	DUMMY,
 };


Patches currently in stable-queue which might be from nicolas.pitre@linaro.org are

queue-4.9/console-dummy-leave-.con_font_get-set-to-null.patch