{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "aaa31047a6d25da0fa101da1ed544e1247949b40"
            },
            {
              "fixed": "0ab8880865f9678eb6174e72c1fc4712e44c745c"
            },
            {
              "fixed": "238c612357b5a25f03eacf356f95034f8551f218"
            },
            {
              "fixed": "ef0c7d4b04a0e6ad175323c24bc84e11470dd79d"
            },
            {
              "fixed": "e6107a4c74b54cb33e3bce162a63048ae5a6b198"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.13.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72320.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nft_lookup: fix catchall element handling with inverted lookups\n\nnft_lookup_eval() decides whether a lookup matched (`found`) from the\ndirect set lookup and priv-\u003einvert before falling back to the\ncatchall element used by interval sets (e.g. nft_set_rbtree) for the\nopen-ended default range. Since `found` is never recomputed after\n`ext` is replaced by the catchall lookup, inverted lookups\n(NFT_LOOKUP_F_INV, \"!= @set\") can wrongly match or wrongly skip the\ncatchall element, producing the wrong verdict. Fold the catchall\nlookup into `ext` before computing `found`, matching the order\nalready used by nft_objref_map_eval().",
  "id": "CVE-2026-72320",
  "modified": "2026-08-18T03:31:01.536248867Z",
  "published": "2026-08-15T05:55:32.939Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0ab8880865f9678eb6174e72c1fc4712e44c745c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/238c612357b5a25f03eacf356f95034f8551f218"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e6107a4c74b54cb33e3bce162a63048ae5a6b198"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ef0c7d4b04a0e6ad175323c24bc84e11470dd79d"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72320.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72320"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "netfilter: nft_lookup: fix catchall element handling with inverted lookups"
}