CVE-2026-53207 (GCVE-0-2026-53207)

Vulnerability from cvelistv5 – Published: 2026-06-25 08:39 – Updated: 2026-06-25 08:39
VLAI
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: 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]
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 405ce051236cc65b30bbfe490b28ce60ae6aed85 , < fc3ff42cb0cbf947e4600ae9761c3783760050e2 (git)
Affected: 405ce051236cc65b30bbfe490b28ce60ae6aed85 , < 77b73b54801ae7137479c141fd0473a491c1dc48 (git)
Affected: 405ce051236cc65b30bbfe490b28ce60ae6aed85 , < a33bfed648c10f5a1519981dbfad80841191edc8 (git)
Affected: 405ce051236cc65b30bbfe490b28ce60ae6aed85 , < dd77a83915b07e2b0205adb284f08b39ae31dc4b (git)
Affected: 405ce051236cc65b30bbfe490b28ce60ae6aed85 , < bf7ba8f96c258c30393814491930ae4ecdc5fe5e (git)
Affected: 405ce051236cc65b30bbfe490b28ce60ae6aed85 , < 3c2d42b8ee345b17a4ba56b0f6492d1ff4c1178e (git)
Affected: 62d1655b922958826b7ec22682c3141746f75064 (git)
Affected: 5.15.54 , < 5.16 (semver)
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Linux Linux Affected: 5.18
Unaffected: 0 , < 5.18 (semver)
Unaffected: 6.1.176 , ≤ 6.1.* (semver)
Unaffected: 6.6.143 , ≤ 6.6.* (semver)
Unaffected: 6.12.94 , ≤ 6.12.* (semver)
Unaffected: 6.18.36 , ≤ 6.18.* (semver)
Unaffected: 7.0.13 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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          "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]"
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        "dateUpdated": "2026-06-25T08:39:13.592Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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      ],
      "title": "mm/memory-failure: fix hugetlb_lock AA deadlock in get_huge_page_for_hwpoison",
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    "cveId": "CVE-2026-53207",
    "datePublished": "2026-06-25T08:39:13.592Z",
    "dateReserved": "2026-06-09T07:44:35.391Z",
    "dateUpdated": "2026-06-25T08:39:13.592Z",
    "state": "PUBLISHED"
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      "source": "Microsoft CSAF VEX",
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      "title": "mm/memory-failure: fix hugetlb_lock AA deadlock in get_huge_page_for_hwpoison",
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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 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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-07-02T21:32:32+00:00",
      "cve": "CVE-2026-53207",
      "id": "CVE-2026-53207",
      "initial_release_date": "2026-06-25T00:00:00+00:00",
      "product_status:known_affected": "198",
      "product_status:known_not_affected": "76",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: mm/memory-failure: fix hugetlb_lock AA deadlock in get_huge_page_for_hwpoison",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53207.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-06-30T01:43:31Z",
      "cve": "CVE-2026-53207",
      "id": "CVE-2026-53207",
      "initial_release_date": "2026-06-26T02:10:04Z",
      "product_status:known_affected": "112",
      "product_status:known_not_affected": "179",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-53207",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-53207.json",
      "version": "4"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.