diff options
| author | Johan Hovold <johan@kernel.org> | 2017-10-04 11:01:13 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-10-18 09:20:43 +0200 |
| commit | 208563455aac7540755bb9d8e8edaf7c5ef61d8c (patch) | |
| tree | 51bd324c7767017484e19c6d9ed91f45b2465e4f | |
| parent | 6c14436b5e848fb7b308b525cad546a37172a288 (diff) | |
USB: serial: console: fix use-after-free after failed setup
commit 299d7572e46f98534033a9e65973f13ad1ce9047 upstream.
Make sure to reset the USB-console port pointer when console setup fails
in order to avoid having the struct usb_serial be prematurely freed by
the console code when the device is later disconnected.
Fixes: 73e487fdb75f ("[PATCH] USB console: fix disconnection issues")
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/serial/console.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/serial/console.c b/drivers/usb/serial/console.c index 3806e7014199..2938153fe7b1 100644 --- a/drivers/usb/serial/console.c +++ b/drivers/usb/serial/console.c @@ -189,6 +189,7 @@ static int usb_console_setup(struct console *co, char *options) tty_kref_put(tty); reset_open_count: port->port.count = 0; + info->port = NULL; usb_autopm_put_interface(serial->interface); error_get_interface: usb_serial_put(serial); |