{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-72418",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-72418",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-08-15T05:56:38.374Z",
    "updatedAt": "2026-10-16T18:55:22.660Z",
    "importedAt": "2026-10-24T01:58:25.636Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "netfilter: nf_conncount: prevent connlimit drops for early confirmed ct",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_conncount: prevent connlimit drops for early confirmed ct\n\nCommit 69894e5b4c5e (\"netfilter: nft_connlimit: update the count if add\nwas skipped\") introduced a regression where packets for valid\nconnections are dropped when using connlimit for soft-limiting\nscenarios.\n\nThe issue occurs when a new connection reuses a socket currently in\nthe TIME_WAIT state. In this scenario, the connection tracking entry\nis evaluated as already confirmed. Previously, __nf_conncount_add()\nassumed that if a connection was confirmed and did not originate from\nthe loopback interface, it should skip the addition and return -EEXIST.\n\nSkipping the addition triggers a garbage collection run that cleans up\nthe TIME_WAIT connection. Consequently, the active connection count\ndrops to 0, which xt_connlimit mishandles, leading to the false rejection\nof the perfectly valid new connection.\n\nFix this by replacing the interface check with protocol-agnostic state\nchecks. We now skip the tree insertion and preserve the lockless garbage\ncollection optimization only if the connection is IPS_ASSURED. This\nallows early-confirmed setup packets (such as reused TIME_WAIT sockets\nor locally generated SYN-ACKs) to be properly evaluated and counted\nwithout falsely dropping. The goto check_connections path is maintained\nto ensure these setup packets are deduplicated correctly.\n\nThis has been tested with slowhttptest and HTTP server configured\nlocally to ensure we are not breaking soft-limiting scenarios for local\nor external connections. In addition, it was tested with a OVS zone\nlimit too.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "460c112e1d887b58b06b56e8e0230058906ff2c3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "000ac6830b56499d6b65fd91486ce6689eb02be4"
            },
            {
              "version": "53bc0ac47f4f7621c991807bc90e01df49561ac8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cbe2d14a7c5b1fc71821fbfee5c4963917411e92"
            },
            {
              "version": "ca8b4d1d6304a84ce2016fa2fe9a114b9607b839",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3793d24de224943e0a6016bbeffb6f5c4cea2e3d"
            },
            {
              "version": "8286c02fe9100330475331253fc590f047963f90",
              "status": "affected",
              "versionType": "git",
              "lessThan": "abef7f817217fcb62c11821d6b895063eadb2828"
            },
            {
              "version": "b29ddccf36946a90323486221f39e9f88cc01b8e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ebfe8249ba79e4ff0f1e3aad8787b992ef27f026"
            },
            {
              "version": "77ea3d8ac3d3d59b5ac9ad639e4ba107c0f2ff1e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "329f2626ee5cb8fafdf6b58b624311529c57cb45"
            },
            {
              "version": "69894e5b4c5e28cda5f32af33d4a92b7a4b93b0e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "be52572c6d55f677ba76869d3c63805c0d4891a3"
            },
            {
              "version": "69894e5b4c5e28cda5f32af33d4a92b7a4b93b0e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c8b6f36f766991e3ebebec6596daee4b04dcbc49"
            },
            {
              "version": "f85623af16b83615e5f64a9b19ae1d584805cb07",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "5.10.248",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.10.261"
            },
            {
              "version": "5.15.198",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.15.212"
            },
            {
              "version": "6.1.160",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.1.178"
            },
            {
              "version": "6.6.120",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.6.145"
            },
            {
              "version": "6.12.63",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.12.97"
            },
            {
              "version": "6.18.2",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.18.40"
            },
            {
              "version": "6.17.13",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.18"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.19",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.19"
            },
            {
              "version": "5.10.261",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.212",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.178",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.145",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.97",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.40",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.5",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}