{
  "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-2026-80809",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-80809",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-04T15:13:29.769Z",
    "updatedAt": "2026-10-19T08:44:02.755Z",
    "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": "ocfs2: fix missing metadata reservation for large xattrs",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: fix missing metadata reservation for large xattrs\n\n[BUG]\nlsetxattr() panics the kernel when setting a large xattr value on a\nfragmented filesystem where the file already has an external xattr\nblock.\n\n[CAUSE]\nocfs2_calc_xattr_set_need() never reserves metadata blocks for a new\nxattr value's extent tree when the file already has an external xattr\nblock. The not_found path leaves meta_add at zero, so meta_ac is NULL\nwhen ocfs2_xattr_extend_allocation() runs.\n\nA new value root has room for a single extent record. On a fragmented\nfilesystem, the allocator cannot satisfy the xattr value in one\ncontiguous run, so each non-contiguous run requires its own extent\nrecord. When the value root's extent list is full and meta_ac is NULL,\nocfs2_add_clusters_in_btree() returns RESTART_META, and\nocfs2_xattr_extend_allocation() hits BUG_ON(why == RESTART_META).\n\n[FIX]\nThe case where no xattr block exists yet already calls\nocfs2_extend_meta_needed(&def_xv.xv.xr_list) to reserve value tree\nmetadata. Add the same reservation to the case where an xattr block\nalready exists, making the two cases consistent.\n\nReplace the BUG_ON with a -ENOSPC return so that if RESTART_META is\nreturned despite the reservation, the error propagates to userspace\ninstead of panicking the kernel.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "a78f9f4668949a6588b8872f162e86685c63d023",
              "status": "affected",
              "versionType": "git",
              "lessThan": "743ac908282ac97ef6e73ac3a92df2cc8ecb7479"
            },
            {
              "version": "a78f9f4668949a6588b8872f162e86685c63d023",
              "status": "affected",
              "versionType": "git",
              "lessThan": "04ba24bce61c917b5b3009f0db470cbb72e26a0d"
            },
            {
              "version": "a78f9f4668949a6588b8872f162e86685c63d023",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b4663405ae29d36011cd712d243456f3f9ab700d"
            },
            {
              "version": "a78f9f4668949a6588b8872f162e86685c63d023",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6a009f1e61b11d9e23d3c5aa1dacfb010945da45"
            },
            {
              "version": "a78f9f4668949a6588b8872f162e86685c63d023",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b9eb5c9fdd81d82976d4d5be2b2458eb7d7e46ec"
            },
            {
              "version": "a78f9f4668949a6588b8872f162e86685c63d023",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6176313622e34fa3e2b66b9d0682d1e1c6b365c5"
            },
            {
              "version": "a78f9f4668949a6588b8872f162e86685c63d023",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a3ccb57086dd7652d5ecb826486144198a98a8e9"
            },
            {
              "version": "a78f9f4668949a6588b8872f162e86685c63d023",
              "status": "affected",
              "versionType": "git",
              "lessThan": "50f0cbec45b0f3fd7e1263d01916518dbf31eb3f"
            },
            {
              "version": "a78f9f4668949a6588b8872f162e86685c63d023",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0cdc7dde00ec63ac714271fa8b2918d630b8da1a"
            },
            {
              "version": "92f61d8a31e270f9391e7bcc0ac638bd4262a8e0",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "2.6.34.2",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "2.6.35"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.35",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.35"
            },
            {
              "version": "5.10.267",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.218",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.185",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.154",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.106",
              "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": "*"
            }
          ]
        }
      ]
    }
  }
}