Pavel Skripkin 55aa314a1a tty: fix memory leak in vc_deallocate ...

commit 211b4d42b70f1c1660feaa968dac0efc2a96ac4d upstream.

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>

2021-05-11 14:04:17 +02:00

..

.gitignore

tty: fix up a few remaining files without SPDX identifiers

2019-04-04 18:48:43 +02:00

consolemap.c

vt/consolemap: do font sum unsigned

2021-03-07 12:20:44 +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

tty: fix up a few remaining files without SPDX identifiers

2019-04-04 18:48:43 +02:00

defkeymap.map

tty: fix up a few remaining files without SPDX identifiers

2019-04-04 18:48:43 +02:00

keyboard.c

vt: keyboard, extend func_buf_lock to readers

2020-11-05 11:43:29 +01:00

Makefile

…

selection.c

vt: selection, introduce vc_is_sel

2020-04-02 15:11:00 +02:00

vc_screen.c

vcs: prevent write access to vcsu devices

2019-12-13 08:43:22 +01:00

vt_ioctl.c

tty: make FONTX ioctl use the tty pointer they were actually passed

2020-11-05 11:43:36 +01:00

vt.c

tty: fix memory leak in vc_deallocate

2021-05-11 14:04:17 +02:00