From: Johan Hovold johan@kernel.org
commit 4d6636498c41891d0482a914dd570343a838ad79 upstream.
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 Signed-off-by: Marc Kleine-Budde mkl@pengutronix.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/net/can/usb/mcba_usb.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
--- 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 u 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 = {