CVE-2026-74695 netfilter: nf_flow_table: drop existing skb dst before skb_dst_set_noref()

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfflowtable: drop existing skb dst before skbdstsetnoref Incoming skbs passing through netfilter flowtable offload hooks or XFRM offload path might already carry a ref-counted dstentry assigned during earlier RX or...