USB: ssu100: fix use-after-free in TIOCMIWAIT
authorJohan Hovold <jhovold@gmail.com>
Tue, 19 Mar 2013 08:21:25 +0000 (09:21 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 5 Apr 2013 16:26:04 +0000 (09:26 -0700)
commit5295acf893d6aecc4b411ea083c442c665c9641b
treeb53d12badb2bc1e30fc83df3a2b04331fea28bbe
parent8e7d4b9131241a62e62111a53980e7e3ecbe6198
USB: ssu100: fix use-after-free in TIOCMIWAIT

commit 43a66b4c417ad15f6d2f632ce67ad195bdf999e8 upstream.

Use the port wait queue and make sure to check the serial disconnected
flag before accessing private port data after waking up.

This is is needed as the private port data (including the wait queue
itself) can be gone when waking up after a disconnect.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/serial/ssu100.c