This is a note to let you know that I've just added the patch titled
vt: clear selection before resizing
to the 4.4-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:
vt-clear-selection-before-resizing.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 009e39ae44f4191188aeb6dfbf661b771dbbe515 Mon Sep 17 00:00:00 2001
From: Scot Doyle <lkml14@xxxxxxxxxxxxx>
Date: Thu, 13 Oct 2016 12:12:43 -0500
Subject: vt: clear selection before resizing
From: Scot Doyle <lkml14@xxxxxxxxxxxxx>
commit 009e39ae44f4191188aeb6dfbf661b771dbbe515 upstream.
When resizing a vt its selection may exceed the new size, resulting in
an invalid memory access [1]. Clear the selection before resizing.
[1] http://lkml.kernel.org/r/CACT4Y+acDTwy4umEvf5ROBGiRJNrxHN4Cn5szCXE5Jw-d1B=Xw@xxxxxxxxxxxxxx
Reported-and-tested-by: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Signed-off-by: Scot Doyle <lkml14@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/tty/vt/vt.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -876,6 +876,9 @@ static int vc_do_resize(struct tty_struc
if (!newscreen)
return -ENOMEM;
+ if (vc == sel_cons)
+ clear_selection();
+
old_rows = vc->vc_rows;
old_row_size = vc->vc_size_row;
Patches currently in stable-queue which might be from lkml14@xxxxxxxxxxxxx are
queue-4.4/vt-clear-selection-before-resizing.patch
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