From: Johan Hovold johan@kernel.org
commit 7fd25e6fc035f4b04b75bca6d7e8daa069603a76 upstream.
The disconnect callback was accessing the hardware-descriptor private data after having having freed it.
Fixes: 7490b008d123 ("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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/net/ieee802154/atusb.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/net/ieee802154/atusb.c +++ b/drivers/net/ieee802154/atusb.c @@ -1137,10 +1137,11 @@ static void atusb_disconnect(struct usb_
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__); }