{
  "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-2024-27022",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-27022",
    "idYear": 2024,
    "status": "PUBLISHED",
    "publishedAt": "2024-05-01T05:35:39.627Z",
    "updatedAt": "2026-08-05T11:29:04.523Z",
    "importedAt": "2026-10-24T01:57:07.518Z",
    "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": "fork: defer linking file vma until vma is fully initialized",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nfork: defer linking file vma until vma is fully initialized\n\nThorvald reported a WARNING [1]. And the root cause is below race:\n\n CPU 1\t\t\t\t\tCPU 2\n fork\t\t\t\t\thugetlbfs_fallocate\n  dup_mmap\t\t\t\t hugetlbfs_punch_hole\n   i_mmap_lock_write(mapping);\n   vma_interval_tree_insert_after -- Child vma is visible through i_mmap tree.\n   i_mmap_unlock_write(mapping);\n   hugetlb_dup_vma_private -- Clear vma_lock outside i_mmap_rwsem!\n\t\t\t\t\t i_mmap_lock_write(mapping);\n   \t\t\t\t\t hugetlb_vmdelete_list\n\t\t\t\t\t  vma_interval_tree_foreach\n\t\t\t\t\t   hugetlb_vma_trylock_write -- Vma_lock is cleared.\n   tmp->vm_ops->open -- Alloc new vma_lock outside i_mmap_rwsem!\n\t\t\t\t\t   hugetlb_vma_unlock_write -- Vma_lock is assigned!!!\n\t\t\t\t\t i_mmap_unlock_write(mapping);\n\nhugetlb_dup_vma_private() and hugetlb_vm_op_open() are called outside\ni_mmap_rwsem lock while vma lock can be used in the same time.  Fix this\nby deferring linking file vma until vma is fully initialized.  Those vmas\nshould be initialized first before they can be used.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "8d9bfb2608145cf3e408428c224099e1585471af",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2e5cbab8ccbfc7d4a3d8a21d3c2a1f2c1aa29b5b"
            },
            {
              "version": "8d9bfb2608145cf3e408428c224099e1585471af",
              "status": "affected",
              "versionType": "git",
              "lessThan": "abdb88dd272bbeb93efe01d8e0b7b17e24af3a34"
            },
            {
              "version": "8d9bfb2608145cf3e408428c224099e1585471af",
              "status": "affected",
              "versionType": "git",
              "lessThan": "35e351780fa9d8240dd6f7e4f245f9ea37e96c19"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.1",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.1"
            },
            {
              "version": "6.6.134",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.8.8",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.8.*"
            },
            {
              "version": "6.9",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}