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%3Ba=su...
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