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CVE-2025-39754

Estado: AnalizadaMedia (4.7)—

In the Linux kernel, the following vulnerability has been resolved:

mm/smaps: fix race between smaps_hugetlb_range and migration

smaps_hugetlb_range() handles the pte without holdling ptl, and may be concurrenct with migration, leaing to BUG_ON in pfn_swap_entry_to_page(). The race is as follows.

To fix it, hold ptl lock in smaps_hugetlb_range().

Detalles técnicos trazas, registros y código del informe original
smaps_hugetlb_range              migrate_pages
  huge_ptep_get
                                   remove_migration_ptes
				   folio_unlock
  pfn_swap_entry_folio
    BUG_ON

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

Mostrar
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          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
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          "value": "CWE-362"
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  "descriptions": [
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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/smaps: fix race between smaps_hugetlb_range and migration\n\nsmaps_hugetlb_range() handles the pte without holdling ptl, and may be\nconcurrenct with migration, leaing to BUG_ON in pfn_swap_entry_to_page(). \nThe race is as follows.\n\nsmaps_hugetlb_range              migrate_pages\n  huge_ptep_get\n                                   remove_migration_ptes\n\t\t\t\t   folio_unlock\n  pfn_swap_entry_folio\n    BUG_ON\n\nTo fix it, hold ptl lock in smaps_hugetlb_range()."
    }
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  "lastModified": "2026-06-17T09:18:24.773",
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