Commit 7fd25e6f authored Sep 19, 2019 by Johan Hovold Committed by Stefan Schmidt Sep 19, 2019

ieee802154: atusb: fix use-after-free at disconnect



The disconnect callback was accessing the hardware-descriptor private
data after having having freed it.

Fixes: 7490b008 ("ieee802154: add support for atusb transceiver")
Cc: stable <stable@vger.kernel.org>     # 4.2
Cc: Alexander Aring <alex.aring@gmail.com>
Reported-by:  <syzbot+f4509a9138a1472e7e80@syzkaller.appspotmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>

parent f53a7ad1

drivers/net/ieee802154/atusb.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -1137,10 +1137,11 @@ static void atusb_disconnect(struct usb_interface *interface)

		ieee802154_unregister_hw(atusb->hw);

		usb_put_dev(atusb->usb_dev);

		ieee802154_free_hw(atusb->hw);

		usb_set_intfdata(interface, NULL);
		usb_put_dev(atusb->usb_dev);

		pr_debug("%s done\n", __func__);
		}

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