Commit ce9b94da authored by Johan Hovold's avatar Johan Hovold Committed by Greg Kroah-Hartman

can: mcba_usb: fix use-after-free on disconnect

commit 4d663649 upstream.

The driver was accessing its driver data after having freed it.

Fixes: 51f3baad ("can: mcba_usb: Add support for Microchip CAN BUS Analyzer")
Cc: stable <stable@vger.kernel.org>     # 4.12
Cc: Remigiusz Kołłątaj <remigiusz.kollataj@mobica.com>
Reported-by: syzbot+e29b17e5042bbc56fae9@syzkaller.appspotmail.com
Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
Signed-off-by: default avatarMarc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 5a9e37f2
......@@ -887,9 +887,8 @@ static void mcba_usb_disconnect(struct usb_interface *intf)
netdev_info(priv->netdev, "device disconnected\n");
unregister_candev(priv->netdev);
free_candev(priv->netdev);
mcba_urb_unlink(priv);
free_candev(priv->netdev);
}
static struct usb_driver mcba_usb_driver = {
......
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