CVE-2025-39754 (GCVE-0-2025-39754)
Vulnerability from cvelistv5
Published
2025-09-11 16:52
Modified
2025-09-11 16:52
Severity ?
Summary
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. smaps_hugetlb_range migrate_pages huge_ptep_get remove_migration_ptes folio_unlock pfn_swap_entry_folio BUG_ON To fix it, hold ptl lock in smaps_hugetlb_range().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/09fc018f48871123ad5dbd7b03c956580232ed76
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2a1f3663974162b8f1e098196f557cfc1d160138
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/45d19b4b6c2d422771c29b83462d84afcbb33f01
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b625883ccbcc2b57808db51d1375b1d7b9bcb3e5
Impacted products
Vendor Product Version
Linux Linux Version: 25ee01a2fca02dfb5a3ce316e77910c468108199
Version: 25ee01a2fca02dfb5a3ce316e77910c468108199
Version: 25ee01a2fca02dfb5a3ce316e77910c468108199
Version: 25ee01a2fca02dfb5a3ce316e77910c468108199
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   Linux Linux Version: 4.4
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{
  "containers": {
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          "programFiles": [
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      "descriptions": [
        {
          "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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      "providerMetadata": {
        "dateUpdated": "2025-09-11T16:52:24.763Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-39754",
    "datePublished": "2025-09-11T16:52:24.763Z",
    "dateReserved": "2025-04-16T07:20:57.125Z",
    "dateUpdated": "2025-09-11T16:52:24.763Z",
    "state": "PUBLISHED"
  },
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}


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