CVE-2026-72320

In the Linux kernel, the following vulnerability has been resolved:

netfilter: nft_lookup: fix catchall element handling with inverted lookups

nftlookupeval() decides whether a lookup matched (found) from the

direct set lookup and priv->invert before falling back to the

catchall element used by interval sets (e.g. nftsetrbtree) for the

open-ended default range. Since found is never recomputed after

ext is replaced by the catchall lookup, inverted lookups

(NFTLOOKUPF_INV, "!= @set") can wrongly match or wrongly skip the

catchall element, producing the wrong verdict. Fold the catchall

lookup into ext before computing found, matching the order

already used by nftobjrefmap_eval().