CVE-2025-39754 (GCVE-0-2025-39754)

Vulnerability from cvelistv5 – Published: 2025-09-11 16:52 – Updated: 2026-10-21 12:37
VLAI
Title
mm/smaps: fix race between smaps_hugetlb_range and migration
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().
Severity
4.7 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7064 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 25ee01a2fca02dfb5a3ce316e77910c468108199 , < f76089018b34dbe0c2e9b67c5b7d8860668748bb (git)
Affected: 25ee01a2fca02dfb5a3ce316e77910c468108199 , < 2a1f3663974162b8f1e098196f557cfc1d160138 (git)
Affected: 25ee01a2fca02dfb5a3ce316e77910c468108199 , < 09fc018f48871123ad5dbd7b03c956580232ed76 (git)
Affected: 25ee01a2fca02dfb5a3ce316e77910c468108199 , < b625883ccbcc2b57808db51d1375b1d7b9bcb3e5 (git)
Affected: 25ee01a2fca02dfb5a3ce316e77910c468108199 , < 45d19b4b6c2d422771c29b83462d84afcbb33f01 (git)
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Linux Linux Affected: 4.4
Unaffected: 0 , < 4.4 (semver)
Unaffected: 6.6.160 , ≤ 6.6.* (semver)
Unaffected: 6.12.43 , ≤ 6.12.* (semver)
Unaffected: 6.15.11 , ≤ 6.15.* (semver)
Unaffected: 6.16.2 , ≤ 6.16.* (semver)
Unaffected: 6.17 , ≤ * (original_commit_for_fix)
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}



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