{
  "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-2026-80806",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-80806",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-04T15:13:20.282Z",
    "updatedAt": "2026-10-19T08:43:59.390Z",
    "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": "ext4: don't enable DAX on new encrypted files",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: don't enable DAX on new encrypted files\n\nCurrently, when a new encrypted regular file is created, the call to\next4_set_inode_flags(inode, init=true) in __ext4_new_inode() is made\nbefore EXT4_INODE_ENCRYPT is set.  As a result, it can set S_DAX if the\nfilesystem is mounted with \"-o dax=always\".\n\nEXT4_INODE_ENCRYPT then actually gets set a bit later in\n__ext4_new_inode(), when it calls fscrypt_set_context() which calls\next4_set_context().  ext4_set_context() sets EXT4_INODE_ENCRYPT and\ncalls ext4_set_inode_flags(inode, init=false) to set S_ENCRYPTED too.\n\nThis was intended to clear S_DAX as well.  However, this was broken by\ncommit 043546e46dc7 (\"fs/ext4: Only change S_DAX on inode load\").  This\ncauses data written to the file to bypass encryption, also causing\nxfstests failures such as generic/548 (when \"-o dax=always\" is used).\n\nFix this by simplifying the flow by making __ext4_new_inode() set\nEXT4_INODE_ENCRYPT earlier.  This makes it take effect in\next4_set_inode_flags(inode, init=true), making S_DAX never be set.\n\nSimilarly, make EXT4_STATE_MAY_INLINE_DATA never be set in the first\nplace on new encrypted inodes.  Then it doesn't need to be cleared.\n\nAs a result of these simplifications, ext4_set_context() no longer needs\nto change inode flags or state when 'handle != NULL'.  Remove that too.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "043546e46dc70c25ff7e2cf6d09cbb0424fc9978",
              "status": "affected",
              "versionType": "git",
              "lessThan": "add98959b220935b243170214c787bc03044a44d"
            },
            {
              "version": "043546e46dc70c25ff7e2cf6d09cbb0424fc9978",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f53b325068bca0b238c3e0d2eb7de9b1f2268cab"
            },
            {
              "version": "043546e46dc70c25ff7e2cf6d09cbb0424fc9978",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5959cad3cfa852ec07bbdaf9c17f4838a94a8e6c"
            },
            {
              "version": "043546e46dc70c25ff7e2cf6d09cbb0424fc9978",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a13f61ba9b2a7a4ff1f140949ccfad23c5313757"
            },
            {
              "version": "043546e46dc70c25ff7e2cf6d09cbb0424fc9978",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ed1cd834da65db127f1c30ff67e78f14825a06c1"
            },
            {
              "version": "043546e46dc70c25ff7e2cf6d09cbb0424fc9978",
              "status": "affected",
              "versionType": "git",
              "lessThan": "458776af0061afec1014cb3cd0061e282e482e83"
            },
            {
              "version": "043546e46dc70c25ff7e2cf6d09cbb0424fc9978",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3392391b363a63ebb531d45318a729b1c998565b"
            },
            {
              "version": "043546e46dc70c25ff7e2cf6d09cbb0424fc9978",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e27bae352158c007143d5bb50f3af33a177c0a37"
            },
            {
              "version": "043546e46dc70c25ff7e2cf6d09cbb0424fc9978",
              "status": "affected",
              "versionType": "git",
              "lessThan": "da32af420d6d466e247c43ac0b829edeac7ae0ad"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.8",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.8"
            },
            {
              "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": "6.18.47",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.11",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2.1",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}