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conntrack: re-fetch conntrack after insertion","CVE":"CVE-2022-49561","Year":"2022"},"notes":[{"CveYear":"2022","CveId":"49561","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: conntrack: re-fetch conntrack after insertion\n\nIn case the conntrack is clashing, insertion can free skb->_nfct and\nset skb->_nfct to the already-confirmed entry.\n\nThis wasn't found before because the conntrack entry and the extension\nspace used to free'd after an rcu grace period, plus the race needs\nevents enabled to trigger.","Type":"Description","Title":"netfilter: conntrack: re-fetch conntrack after insertion"}]}}}