Commit 9f2d48f0 authored by Scot Doyle's avatar Scot Doyle Committed by Sasha Levin

vt: clear selection before resizing

[ Upstream commit 009e39ae ]

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.comReported-and-tested-by: default avatarDmitry Vyukov <dvyukov@google.com>
Signed-off-by: default avatarScot Doyle <lkml14@scotdoyle.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarSasha Levin <alexander.levin@verizon.com>
parent 93ec720c
......@@ -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;
......
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