{
  "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-2026-98422",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-98422",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-10-14T13:27:50.789Z",
    "updatedAt": "2026-10-19T09:19:15.873Z",
    "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": "wifi: mac80211: reset the AP_VLAN tailroom counter on ifdown",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: reset the AP_VLAN tailroom counter on ifdown\n\nOn ifup, AP_VLAN interfaces get crypto_tx_tailroom_needed_cnt from\nthe AP interface, but it's never decremented again unless the AP is\nalso brought down. Thus, bringing the same AP_VLAN up again will\nincrement the counter again and eventually hit the sanity check:\n\n  WARN_ON_ONCE(sdata->crypto_tx_tailroom_needed_cnt !=\n               master->crypto_tx_tailroom_needed_cnt);\n\nReset it on ifdown to avoid that.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b0b32d3f163d24ea7134380666193bf398e9dc0b"
            },
            {
              "version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f6b34a7d64324faf28eedc0f8678b0f832f1cc36"
            },
            {
              "version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322",
              "status": "affected",
              "versionType": "git",
              "lessThan": "304a874670a0b6ab5589a7f60b4af0251797b121"
            },
            {
              "version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7775759e3cb35ef5a571b2d877c2a9b70a5d5f08"
            },
            {
              "version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3d76b45e8432c0d75fcb9e90d92eaa3176898adf"
            },
            {
              "version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4b54d01b48445b66c9e576de92b90a3a3ae7b34a"
            },
            {
              "version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322",
              "status": "affected",
              "versionType": "git",
              "lessThan": "875835377d8d62c849b4eb03a7abfafa71d7668f"
            },
            {
              "version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4504f3960dc4501c73be9f99eabda2e26e9db41e"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.1",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.1"
            },
            {
              "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": "6.18.54",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.8",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}