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 4.14-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-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 724ba8b30b044aa0d94b1cd374fc15806cdd6f18 Mon Sep 17 00:00:00 2001
From: Nicolas Pitre <nicolas.pitre@xxxxxxxxxx>
Date: Mon, 15 Jan 2018 17:04:22 +0100
Subject: console/dummy: leave .con_font_get set to NULL
From: Nicolas Pitre <nicolas.pitre@xxxxxxxxxx>
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@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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@xxxxxxxxxx are
queue-4.14/console-dummy-leave-.con_font_get-set-to-null.patch