4.8-stable review patch. If anyone has any objections, please let me know.
------------------ From: Scot Doyle <lkm...@scotdoyle.com> 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=x...@mail.gmail.com Reported-and-tested-by: Dmitry Vyukov <dvyu...@google.com> Signed-off-by: Scot Doyle <lkm...@scotdoyle.com> Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org> --- drivers/tty/vt/vt.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/tty/vt/vt.c +++ b/drivers/tty/vt/vt.c @@ -874,6 +874,9 @@ 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;
