diff options
| author | Scot Doyle <lkml14@scotdoyle.com> | 2016-10-13 12:12:43 -0500 |
|---|---|---|
| committer | Sasha Levin <alexander.levin@verizon.com> | 2016-11-23 20:59:49 -0500 |
| commit | 9f2d48f0745f921040df91bfe8fa7f0339cd7497 (patch) | |
| tree | 06d9cafb40871eb75be0286cfd5269bd96a665d9 | |
| parent | 93ec720c6f10712fc1c6f87a7412194c85b366b9 (diff) | |
vt: clear selection before resizing
[ Upstream commit 009e39ae44f4191188aeb6dfbf661b771dbbe515 ]
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@mail.gmail.com
Reported-and-tested-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Scot Doyle <lkml14@scotdoyle.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
| -rw-r--r-- | drivers/tty/vt/vt.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c index 4c3721356bda..2df90a54509a 100644 --- a/drivers/tty/vt/vt.c +++ b/drivers/tty/vt/vt.c @@ -871,6 +871,9 @@ static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc, if (!newscreen) return -ENOMEM; + if (vc == sel_cons) + clear_selection(); + old_rows = vc->vc_rows; old_row_size = vc->vc_size_row; |