{
  "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-2026-98491",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-98491",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-10-18T15:16:20.069Z",
    "updatedAt": "2026-10-19T09:20:28.394Z",
    "importedAt": "2026-10-24T01:58:41.756Z",
    "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": "net: openvswitch: conntrack: avoid modifying shared unconfirmed ct entry",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: openvswitch: conntrack: avoid modifying shared unconfirmed ct entry\n\nIn a case where skb with an unconfirmed ct entry gets cloned, we may\nend up committing both but with different sets of extensions.\n\nThe series of events:\n\n 1. The first clone wants to commit and runs the helpers wiring up\n    the extension pointer into the expectation list.\n 2. Then it looses the confirmation keeping the entry unconfirmed.\n 3. Second clone now wants to commit labels and adds the new extension\n    for that breaking the pointer in the expectation list causing\n    UAF on the destruction path later.\n\nWhile this is possible to trigger, there should be no practical\nnetwork pipeline where committing both clones without modifications\ninto the same zone is needed.  So, let's just reset the entry in case\nfor some reason we got an skb with a shared one during commit.  This\ndoesn't affect any known use cases, but avoids any potential problems\nwith sharing and modification of the unconfirmed ct entry.\n\nThe fixes tag points to the introduction of helpers, since that's the\nmain UAF trigger for the sharing.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "cae3a2627520c3795b54533c5328b77af3405dbe",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e0fa5ea434b7e8467ef3adc64e3858b1ca2a642d"
            },
            {
              "version": "cae3a2627520c3795b54533c5328b77af3405dbe",
              "status": "affected",
              "versionType": "git",
              "lessThan": "37e3c878b183a115f9a114067f9ef3b408ad27fb"
            },
            {
              "version": "cae3a2627520c3795b54533c5328b77af3405dbe",
              "status": "affected",
              "versionType": "git",
              "lessThan": "707c2dc77891a874f4e8c52c285a511079164ec8"
            },
            {
              "version": "cae3a2627520c3795b54533c5328b77af3405dbe",
              "status": "affected",
              "versionType": "git",
              "lessThan": "de41ee24f77b0fc45397db3e277cae2adbd43dfe"
            },
            {
              "version": "cae3a2627520c3795b54533c5328b77af3405dbe",
              "status": "affected",
              "versionType": "git",
              "lessThan": "55e5256adf3940e71802e2f749cacf81518726b0"
            },
            {
              "version": "cae3a2627520c3795b54533c5328b77af3405dbe",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e2829ae5459ddb5fce526b2e84697edf6c0c3cef"
            },
            {
              "version": "cae3a2627520c3795b54533c5328b77af3405dbe",
              "status": "affected",
              "versionType": "git",
              "lessThan": "457e0df1b5711fbeb7ba1b6bfd826f5ef30e7e55"
            },
            {
              "version": "cae3a2627520c3795b54533c5328b77af3405dbe",
              "status": "affected",
              "versionType": "git",
              "lessThan": "26b2bd70d22457556e2fa01cbf1192cb1a94d619"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.3",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.3"
            },
            {
              "version": "5.10.271",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.222",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.189",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.158",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.112",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.55",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.9",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}