Commit 0589de2d authored Oct 01, 2019 by Johan Hovold Committed by Greg Kroah-Hartman Nov 12, 2019

can: usb_8dev: fix use-after-free on disconnect



commit 3759739426186a924675651b388d1c3963c5710e upstream.

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

Fixes: 0024d8ad ("can: usb_8dev: Add support for USB2CAN interface from 8 devices")
Cc: stable <stable@vger.kernel.org>     # 3.9
Cc: Bernd Krumboeck <b.krumboeck@gmail.com>
Cc: Wolfgang Grandegger <wg@grandegger.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>

parent 0e0965a2

drivers/net/can/usb/usb_8dev.c

+1 −2

Original line number	Diff line number	Diff line
		@@ -1007,9 +1007,8 @@ static void usb_8dev_disconnect(struct usb_interface *intf)
		netdev_info(priv->netdev, "device disconnected\n");

		unregister_netdev(priv->netdev);
		free_candev(priv->netdev);

		unlink_all_urbs(priv);
		free_candev(priv->netdev);
		}

		}