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

Fixes: 51f3baad7de9 ("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: Johan Hovold johan@kernel.org --- drivers/net/can/usb/mcba_usb.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/can/usb/mcba_usb.c b/drivers/net/can/usb/mcba_usb.c index 19a702ac49e4..21faa2ec4632 100644 --- a/drivers/net/can/usb/mcba_usb.c +++ b/drivers/net/can/usb/mcba_usb.c @@ -876,9 +876,8 @@ 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 = {