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 09:15:16 +0200 |
| commit | 8ae04f638496b7a9b0381aecf5c47dcb5a3bd6fc (patch) | |
| tree | faa95d524fa37bb76f9261cf68c2e3ddf29999a6 /drivers | |
| parent | 2d0ffe43f2b9c99ca1dd67d4911e62c83487362c (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>
Diffstat (limited to 'drivers')
| -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 29fa1c3d0089..926c1f2dc962 100644 --- a/drivers/usb/serial/console.c +++ b/drivers/usb/serial/console.c @@ -187,6 +187,7 @@ 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); |