CVE-2026-64566

The CVE-2026-64566 issue affects the Linux kernel xfrm/IPTFS frag handling. In iptfs_skb_add_frags(), frag references are copied and __skb_frag_ref() increments the page ref count, but SKBFL_SHARED_FRAG is not propagated to the destination SKB’s skb_shinfo->flags, causing the inner SKB to appe...