diff options
| author | Johan Hovold <johan@kernel.org> | 2017-10-04 11:01:13 +0200 |
|---|---|---|
| committer | Moyster <oysterized@gmail.com> | 2017-11-06 15:27:04 +0100 |
| commit | 532c81d087e813c593ce40fceffb3e90e5962695 (patch) | |
| tree | be0daf5d2461ddf611080e622b302e4dd83d3d61 | |
| parent | 6c8cbce85c1abc99892be32df73637ab8cd7f3c4 (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")
Cc: stable <stable@vger.kernel.org> # 2.6.18
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
| -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 5f3bcd31e..f3bbe2101 100644 --- a/drivers/usb/serial/console.c +++ b/drivers/usb/serial/console.c @@ -188,6 +188,7 @@ static int usb_console_setup(struct console *co, char *options) kfree(tty); reset_open_count: port->port.count = 0; + info->port = NULL; usb_autopm_put_interface(serial->interface); error_get_interface: usb_serial_put(serial); |