kernel: netfilter: nft_chain_filter: handle NETDEV_UNREGISTER for inet/ingress basechain

A vulnerability was found in the Linux kernel's netfilter subsystem, related to the nftchainfilter feature. This issue occurs when a NETDEVUNREGISTER event is reported, which can leave a stale reference to a network device in the ingress basechain. If this issue is not addressed, this stale...