{
  "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-2026-80843",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-80843",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-04T15:54:53.328Z",
    "updatedAt": "2026-10-19T08:44:36.352Z",
    "importedAt": "2026-10-24T01:58:30.346Z",
    "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": "xfrm: fix xfrm_state_construct() auth-trunc leak",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: fix xfrm_state_construct() auth-trunc leak\n\nattach_auth_trunc() can allocate x->aalg while leaving\nx->props.aalgo at zero when the selected auth algorithm has no\nsadb_alg_id. One real case is cmac(aes).\n\nxfrm_state_construct() then treats !x->props.aalgo as \"no auth\nalgorithm attached yet\" and calls attach_auth(). That overwrites\nx->aalg and loses the first allocation. Any later failure or teardown\nonly frees the replacement pointer.\n\nCheck whether x->aalg is already attached instead of inferring that\nstate from x->props.aalgo.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "4447bb33f09444920a8f1d89e1540137429351b6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "958ae9f261319e1cdc44879886bcda2263258cca"
            },
            {
              "version": "4447bb33f09444920a8f1d89e1540137429351b6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fb7f3e74789a3c89647f4eb768f6dfaf4a751e72"
            },
            {
              "version": "4447bb33f09444920a8f1d89e1540137429351b6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ba0c110c205855b3f1e3130d8c0fdb484d704c8c"
            },
            {
              "version": "4447bb33f09444920a8f1d89e1540137429351b6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c8837bbe792257af547fd1c0252553ce13148795"
            },
            {
              "version": "4447bb33f09444920a8f1d89e1540137429351b6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "71d42da01740ec6557837bebec0bc48cfc3b4c39"
            },
            {
              "version": "4447bb33f09444920a8f1d89e1540137429351b6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cf67361e78dca488d6e4df8396a53e6745a3a80e"
            },
            {
              "version": "4447bb33f09444920a8f1d89e1540137429351b6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "37426395cb90ef217beec8407a14bd82153793d3"
            },
            {
              "version": "4447bb33f09444920a8f1d89e1540137429351b6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "be19d20e53a239572bb2a28efcc1cd2b069b1ef9"
            },
            {
              "version": "4447bb33f09444920a8f1d89e1540137429351b6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c12cbf56320fb633484ee0ca1fb7d68d6b64b213"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.33",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.33"
            },
            {
              "version": "5.10.269",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.220",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.187",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.156",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.108",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.49",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.13",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2.3",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}