FKIE_CVE-2026-53207

Vulnerability from fkie_nvd - Published: 2026-06-25 09:16 - Updated: 2026-07-02 20:55
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: mm/memory-failure: fix hugetlb_lock AA deadlock in get_huge_page_for_hwpoison Two concurrent madvise(MADV_HWPOISON) calls on the same hugetlb page can trigger a recursive spinlock self-deadlock (AA deadlock) on hugetlb_lock when racing with a concurrent unmap: thread#0 thread#1 -------- -------- madvise(folio, MADV_HWPOISON) -> poisons the folio successfully madvise(folio, MADV_HWPOISON) unmap(folio) try_memory_failure_hugetlb get_huge_page_for_hwpoison spin_lock_irq(&hugetlb_lock) <- held __get_huge_page_for_hwpoison hugetlb_update_hwpoison() -> MF_HUGETLB_FOLIO_PRE_POISONED goto out: folio_put() refcount: 1 -> 0 free_huge_folio() spin_lock_irqsave(&hugetlb_lock) -> AA DEADLOCK! The out: path in __get_huge_page_for_hwpoison() calls folio_put() to drop the GUP reference while the hugetlb_lock is still held by the hugetlb.c wrapper get_huge_page_for_hwpoison(). If concurrent unmap has released the page table mapping reference, folio_put() drops the folio refcount to zero, triggering free_huge_folio() which attempts to re-acquire the non-recursive hugetlb_lock. Fix this by moving hugetlb_lock acquisition from the hugetlb.c wrapper into get_huge_page_for_hwpoison(). Place spin_unlock_irq() before the folio_put() at the out: label so the folio is always released outside the lock. [akpm@linux-foundation.org: fix race, rename label per Miaohe]
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3c2d42b8ee345b17a4ba56b0f6492d1ff4c1178ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/77b73b54801ae7137479c141fd0473a491c1dc48Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a33bfed648c10f5a1519981dbfad80841191edc8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bf7ba8f96c258c30393814491930ae4ecdc5fe5ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dd77a83915b07e2b0205adb284f08b39ae31dc4bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fc3ff42cb0cbf947e4600ae9761c3783760050e2Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 5.18
linux linux_kernel 5.18
linux linux_kernel 5.18
linux linux_kernel 5.18
linux linux_kernel 5.18
linux linux_kernel 7.1
linux linux_kernel 7.1
linux linux_kernel 7.1
linux linux_kernel 7.1
linux linux_kernel 7.1
linux linux_kernel 7.1
To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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    -\u003e 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(\u0026hugetlb_lock)    \u003c- held\n        __get_huge_page_for_hwpoison\n          hugetlb_update_hwpoison()\n            -\u003e MF_HUGETLB_FOLIO_PRE_POISONED\n          goto out:\n            folio_put()\n              refcount: 1 -\u003e 0\n              free_huge_folio()\n                spin_lock_irqsave(\u0026hugetlb_lock)\n                  -\u003e 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]"
    }
  ],
  "id": "CVE-2026-53207",
  "lastModified": "2026-07-02T20:55:07.720",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2026-06-25T09:16:38.233",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/3c2d42b8ee345b17a4ba56b0f6492d1ff4c1178e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/dd77a83915b07e2b0205adb284f08b39ae31dc4b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/fc3ff42cb0cbf947e4600ae9761c3783760050e2"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-667"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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