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| author | Scot Doyle <lkml14@scotdoyle.com> | 2016-10-13 12:12:43 -0500 |
|---|---|---|
| committer | Willy Tarreau <w@1wt.eu> | 2017-02-10 11:03:41 +0100 |
| commit | 5812a9bc9d68a82c2cc839f88e6f7a05093ab39d (patch) | |
| tree | 09be44de2676a27442d895e522575037cf30b729 /drivers | |
| parent | 902fd8d597f6cec01c7d24da38e0a921fdbc6382 (diff) | |
| download | linux-5812a9bc9d68a82c2cc839f88e6f7a05093ab39d.tar.gz linux-5812a9bc9d68a82c2cc839f88e6f7a05093ab39d.tar.bz2 linux-5812a9bc9d68a82c2cc839f88e6f7a05093ab39d.zip | |
vt: clear selection before resizing
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=Xw@mail.gmail.com
Reported-and-tested-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Scot Doyle <lkml14@scotdoyle.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Diffstat (limited to 'drivers')
| -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 5deddca84a27..010ec70d59fb 100644 --- a/drivers/tty/vt/vt.c +++ b/drivers/tty/vt/vt.c @@ -869,6 +869,9 @@ 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; |