Answer in brief
CVE-2026-72320 records a Unknown severity vulnerability in netfilter: nft_lookup: fix catchall element handling with inverted lookups. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=aaa31047a6d25da0fa101da1ed544e1247949b40 <0ab8880865f9678eb6174e72c1fc4712e44c745c || >=aaa31047a6d25da0fa101da1ed544e1247949b40 <238c612357b5a25f03eacf356f95034f8551f218 || >=aaa31047a6d25da0fa101da1ed544e1247949b40 <ef0c7d4b04a0e6ad175323c24bc84e11470dd79d || >=aaa31047a6d25da0fa101da1ed544e1247949b40 <e6107a4c74b54cb33e3bce162a63048ae5a6b198 | 0ab8880865f9678eb6174e72c1fc4712e44c745c, 238c612357b5a25f03eacf356f95034f8551f218, ef0c7d4b04a0e6ad175323c24bc84e11470dd79d, e6107a4c74b54cb33e3bce162a63048ae5a6b198 |
| Linux/Linuxgeneric | 5.13 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_lookup: fix catchall element handling with inverted lookups nft_lookup_eval() 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. nft_set_rbtree) for the open-ended default range. Since `found` is never recomputed after `ext` is replaced by the catchall lookup, inverted lookups (NFT_LOOKUP_F_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 nft_objref_map_eval().
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-72320 records a Unknown severity vulnerability in netfilter: nft_lookup: fix catchall element handling with inverted lookups. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=aaa31047a6d25da0fa101da1ed544e1247949b40 <0ab8880865f9678eb6174e72c1fc4712e44c745c || >=aaa31047a6d25da0fa101da1ed544e1247949b40 <238c612357b5a25f03eacf356f95034f8551f218 || >=aaa31047a6d25da0fa101da1ed544e1247949b40 <ef0c7d4b04a0e6ad175323c24bc84e11470dd79d || >=aaa31047a6d25da0fa101da1ed544e1247949b40 <e6107a4c74b54cb33e3bce162a63048ae5a6b198 | 0ab8880865f9678eb6174e72c1fc4712e44c745c, 238c612357b5a25f03eacf356f95034f8551f218, ef0c7d4b04a0e6ad175323c24bc84e11470dd79d, e6107a4c74b54cb33e3bce162a63048ae5a6b198 |
| Linux/Linuxgeneric | 5.13 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_lookup: fix catchall element handling with inverted lookups nft_lookup_eval() 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. nft_set_rbtree) for the open-ended default range. Since `found` is never recomputed after `ext` is replaced by the catchall lookup, inverted lookups (NFT_LOOKUP_F_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 nft_objref_map_eval().
Quoted source text, attributed separately from HOL analysis.