{"id":"CVE-2026-23083","state":"PUBLISHED","title":"fou: Don't allow 0 for FOU_ATTR_IPPROTO.","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfou: Don't allow 0 for FOU_ATTR_IPPROTO.\n\nfou_udp_recv() has the same problem mentioned in the previous\npatch.\n\nIf FOU_ATTR_IPPROTO is set to 0, skb is not freed by\nfou_udp_recv() nor \"resubmit\"-ted in ip_protocol_deliver_rcu().\n\nLet's forbid 0 for FOU_ATTR_IPPROTO.","publishedAt":"2026-02-04T16:08:07.561Z","updatedAt":"2026-10-19T18:25:29.638Z","severity":null,"assigner":"Linux","products":["Linux 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