CVE-2026-64129 (GCVE-0-2026-64129)

Vulnerability from cvelistv5 – Published: 2026-07-19 15:40 – Updated: 2026-07-19 15:40
VLAI
Title
mm/migrate_device: fix spinlock leak in migrate_vma_insert_huge_pmd_page
Summary
In the Linux kernel, the following vulnerability has been resolved: mm/migrate_device: fix spinlock leak in migrate_vma_insert_huge_pmd_page When check_stable_address_space() fails after the PMD spinlock has been acquired via pmd_lock(), the code jumps directly to the abort label, bypassing the spin_unlock() call in unlock_abort. This causes the PMD spinlock to be permanently held, leading to a deadlock. Change the goto target from abort to unlock_abort to ensure the spinlock is always released on this error path.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: a30b48bf1b244f11bf9b6d20cdccfe0c2264130c , < c715f7ccf7a294c058667b678a4ba50fad933c62 (git)
Affected: a30b48bf1b244f11bf9b6d20cdccfe0c2264130c , < 63451de16e0a08be40f9ab5e7c5c8f5c79676fb1 (git)
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Linux Linux Affected: 6.19
Unaffected: 0 , < 6.19 (semver)
Unaffected: 7.0.11 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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          "programFiles": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/migrate_device: fix spinlock leak in migrate_vma_insert_huge_pmd_page\n\nWhen check_stable_address_space() fails after the PMD spinlock has\nbeen acquired via pmd_lock(), the code jumps directly to the abort\nlabel, bypassing the spin_unlock() call in unlock_abort. This causes\nthe PMD spinlock to be permanently held, leading to a deadlock.\n\nChange the goto target from abort to unlock_abort to ensure the\nspinlock is always released on this error path."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-19T15:40:25.385Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/c715f7ccf7a294c058667b678a4ba50fad933c62"
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        {
          "url": "https://git.kernel.org/stable/c/63451de16e0a08be40f9ab5e7c5c8f5c79676fb1"
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      "title": "mm/migrate_device: fix spinlock leak in migrate_vma_insert_huge_pmd_page",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64129",
    "datePublished": "2026-07-19T15:40:25.385Z",
    "dateReserved": "2026-07-19T07:54:57.036Z",
    "dateUpdated": "2026-07-19T15:40:25.385Z",
    "state": "PUBLISHED"
  },
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    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-07-21T08:03:46+00:00",
      "cve": "CVE-2026-64129",
      "id": "CVE-2026-64129",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: mm/migrate_device: fix spinlock leak in migrate_vma_insert_huge_pmd_page",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64129.json",
      "version": "3"
    }
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}



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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

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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.
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  • 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.


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