A tun device type can trivially be set to arbitrary value using
TUNSETLINK ioctl().
Therefore, lowpan_device_event() must really check that ieee802154_ptr
is not NULL.
Fixes: 2c88b5283f ("ieee802154: 6lowpan: remove check on null")
Signed-off-by: Eric Dumazet <[email protected]>
Cc: Alexander Aring <[email protected]>
Cc: Stefan Schmidt <[email protected]>
Reported-by: syzbot <[email protected]>
Acked-by: Stefan Schmidt <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
ca0edb131b