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CVE-2025-39754

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CVE-2025-39754

Published: Sep 11, 2025

Modified: May 11, 2026

PUBLISHED

Description

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().

VendorProductVersions

Linux

Linux

affected
25ee01a2fca02dfb5a3ce316e77910c468108199 - < 2a1f3663974162b8f1e098196f557cfc1d160138
affected
25ee01a2fca02dfb5a3ce316e77910c468108199 - < 09fc018f48871123ad5dbd7b03c956580232ed76
affected
25ee01a2fca02dfb5a3ce316e77910c468108199 - < b625883ccbcc2b57808db51d1375b1d7b9bcb3e5
affected
25ee01a2fca02dfb5a3ce316e77910c468108199 - < 45d19b4b6c2d422771c29b83462d84afcbb33f01

Linux

Linux

affected
4.4
unaffected
0 - < 4.4
unaffected
6.12.43 - <= 6.12.*
unaffected
6.15.11 - <= 6.15.*
unaffected
6.16.2 - <= 6.16.*

+1 more versions

References

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