linux/drivers/tty/vt
Pavel Skripkin 211b4d42b7 tty: fix memory leak in vc_deallocate
syzbot reported memory leak in tty/vt.
The problem was in VT_DISALLOCATE ioctl cmd.
After allocating unimap with PIO_UNIMAP it wasn't
freed via VT_DISALLOCATE, but vc_cons[currcons].d was
zeroed.

Reported-by: syzbot+bcc922b19ccc64240b42@syzkaller.appspotmail.com
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210327214443.21548-1-paskripkin@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-28 14:16:47 +02:00
..
.gitignore tty: vt: move conmakehash to drivers/tty/vt/ from scripts/ 2019-12-17 14:42:46 +01:00
conmakehash.c tty: vt: move conmakehash to drivers/tty/vt/ from scripts/ 2019-12-17 14:42:46 +01:00
consolemap.c vt/consolemap: do font sum unsigned 2021-01-07 16:17:31 +01:00
cp437.uni tty: fix up a few remaining files without SPDX identifiers 2019-04-04 18:48:43 +02:00
defkeymap.c_shipped vt: keyboard, defkeymap.c_shipped, approach the unicode table 2021-01-07 16:17:31 +01:00
defkeymap.map tty: fix up a few remaining files without SPDX identifiers 2019-04-04 18:48:43 +02:00
keyboard.c vt: keyboard, Fix typo in the doc for vt_get_shift_state() 2021-03-23 10:39:27 +01:00
Makefile kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
selection.c vc: propagate "viewed as bool" from screenpos up 2020-08-18 13:45:20 +02:00
vc_screen.c Revert "vc_screen: extract vcs_read_buf_header" 2020-08-24 19:51:56 +02:00
vt_ioctl.c vt_ioctl: Remove in_interrupt() check 2021-02-09 11:45:04 +01:00
vt.c tty: fix memory leak in vc_deallocate 2021-03-28 14:16:47 +02:00