[04/29] can: usb_8dev: fix use-after-free on disconnect
diff mbox series

Message ID 20191010121750.27237-5-mkl@pengutronix.de
State RFC
Delegated to: David Miller
Headers show
Series
  • [01/29] can: dev: add missing of_node_put() after calling of_get_child_by_name()
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Commit Message

Marc Kleine-Budde Oct. 10, 2019, 12:17 p.m. UTC
From: Johan Hovold <johan@kernel.org>

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

Fixes: 0024d8ad1639 ("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>
---
 drivers/net/can/usb/usb_8dev.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

Patch
diff mbox series

diff --git a/drivers/net/can/usb/usb_8dev.c b/drivers/net/can/usb/usb_8dev.c
index d596a2ad7f78..8fa224b28218 100644
--- a/drivers/net/can/usb/usb_8dev.c
+++ b/drivers/net/can/usb/usb_8dev.c
@@ -996,9 +996,8 @@  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);
 	}
 
 }