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| author | Scot Doyle <lkml14@scotdoyle.com> | 2016-10-13 12:12:43 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-10-27 17:19:35 +0200 |
| commit | 009e39ae44f4191188aeb6dfbf661b771dbbe515 (patch) | |
| tree | d3baf03a7b656f4d5aaa6ecc89547bcfbf05d1d5 /drivers/tty/vt/vt.c | |
| parent | 03842c17397e14cb8bb1adc2015f5dce6c733ffe (diff) | |
| download | linux-stable-009e39ae44f4191188aeb6dfbf661b771dbbe515.tar.gz linux-stable-009e39ae44f4191188aeb6dfbf661b771dbbe515.tar.bz2 linux-stable-009e39ae44f4191188aeb6dfbf661b771dbbe515.zip | |
vt: clear selection before resizing
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>
Diffstat (limited to 'drivers/tty/vt/vt.c')
| -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 26cda08bc611..8c3bf3d613c0 100644 --- a/drivers/tty/vt/vt.c +++ b/drivers/tty/vt/vt.c @@ -876,6 +876,9 @@ 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; |