Commit 3425e397 authored by Scot Doyle's avatar Scot Doyle Committed by Greg Kroah-Hartman

vt: clear selection before resizing

commit 009e39ae 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@mail.gmail.comReported-and-tested-by: default avatarDmitry Vyukov <dvyukov@google.com>
Signed-off-by: default avatarScot Doyle <lkml14@scotdoyle.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent dc1555e6
...@@ -876,6 +876,9 @@ static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc, ...@@ -876,6 +876,9 @@ static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc,
if (!newscreen) if (!newscreen)
return -ENOMEM; return -ENOMEM;
if (vc == sel_cons)
clear_selection();
old_rows = vc->vc_rows; old_rows = vc->vc_rows;
old_row_size = vc->vc_size_row; old_row_size = vc->vc_size_row;
......
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