{
  "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-2026-53207",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-53207",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-06-25T08:39:13.592Z",
    "updatedAt": "2026-06-25T08:39:13.592Z",
    "importedAt": "2026-10-24T01:58:20.586Z",
    "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": "mm/memory-failure: fix hugetlb_lock AA deadlock in get_huge_page_for_hwpoison",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/memory-failure: fix hugetlb_lock AA deadlock in get_huge_page_for_hwpoison\n\nTwo concurrent madvise(MADV_HWPOISON) calls on the same hugetlb page can\ntrigger a recursive spinlock self-deadlock (AA deadlock) on hugetlb_lock\nwhen racing with a concurrent unmap:\n\n  thread#0                              thread#1\n  --------                              --------\n  madvise(folio, MADV_HWPOISON)\n    -> poisons the folio successfully\n  madvise(folio, MADV_HWPOISON)         unmap(folio)\n    try_memory_failure_hugetlb\n      get_huge_page_for_hwpoison\n        spin_lock_irq(&hugetlb_lock)    <- held\n        __get_huge_page_for_hwpoison\n          hugetlb_update_hwpoison()\n            -> MF_HUGETLB_FOLIO_PRE_POISONED\n          goto out:\n            folio_put()\n              refcount: 1 -> 0\n              free_huge_folio()\n                spin_lock_irqsave(&hugetlb_lock)\n                  -> AA DEADLOCK!\n\nThe out: path in __get_huge_page_for_hwpoison() calls folio_put() to drop\nthe GUP reference while the hugetlb_lock is still held by the hugetlb.c\nwrapper get_huge_page_for_hwpoison().  If concurrent unmap has released\nthe page table mapping reference, folio_put() drops the folio refcount to\nzero, triggering free_huge_folio() which attempts to re-acquire the\nnon-recursive hugetlb_lock.\n\nFix this by moving hugetlb_lock acquisition from the hugetlb.c wrapper\ninto get_huge_page_for_hwpoison().  Place spin_unlock_irq() before the\nfolio_put() at the out: label so the folio is always released outside the\nlock.\n\n[akpm@linux-foundation.org: fix race, rename label per Miaohe]",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "405ce051236cc65b30bbfe490b28ce60ae6aed85",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fc3ff42cb0cbf947e4600ae9761c3783760050e2"
            },
            {
              "version": "405ce051236cc65b30bbfe490b28ce60ae6aed85",
              "status": "affected",
              "versionType": "git",
              "lessThan": "77b73b54801ae7137479c141fd0473a491c1dc48"
            },
            {
              "version": "405ce051236cc65b30bbfe490b28ce60ae6aed85",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a33bfed648c10f5a1519981dbfad80841191edc8"
            },
            {
              "version": "405ce051236cc65b30bbfe490b28ce60ae6aed85",
              "status": "affected",
              "versionType": "git",
              "lessThan": "dd77a83915b07e2b0205adb284f08b39ae31dc4b"
            },
            {
              "version": "405ce051236cc65b30bbfe490b28ce60ae6aed85",
              "status": "affected",
              "versionType": "git",
              "lessThan": "bf7ba8f96c258c30393814491930ae4ecdc5fe5e"
            },
            {
              "version": "405ce051236cc65b30bbfe490b28ce60ae6aed85",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3c2d42b8ee345b17a4ba56b0f6492d1ff4c1178e"
            },
            {
              "version": "62d1655b922958826b7ec22682c3141746f75064",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "5.15.54",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.16"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.18",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.18"
            },
            {
              "version": "6.1.176",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.143",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.94",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.36",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.0.13",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.0.*"
            },
            {
              "version": "7.1",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}