CVE-2025-39754
N/A
N/A
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().
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 25ee01a2fca02dfb5a3ce316e77910c468108199 < 2a1f3663974162b8f1e098196f557cfc1d160138 | affected |
| Linux | Linux | 25ee01a2fca02dfb5a3ce316e77910c468108199 < 09fc018f48871123ad5dbd7b03c956580232ed76 | affected |
| Linux | Linux | 25ee01a2fca02dfb5a3ce316e77910c468108199 < b625883ccbcc2b57808db51d1375b1d7b9bcb3e5 | affected |
| Linux | Linux | 25ee01a2fca02dfb5a3ce316e77910c468108199 < 45d19b4b6c2d422771c29b83462d84afcbb33f01 | affected |
| Linux | Linux | 4.4 | affected |
| Linux | Linux | 0 < 4.4 | unaffected |
| Linux | Linux | 6.12.43 <= 6.12.* | unaffected |
| Linux | Linux | 6.15.11 <= 6.15.* | unaffected |
| Linux | Linux | 6.16.2 <= 6.16.* | unaffected |
| Linux | Linux | 6.17 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/2a1f3663974162b8f1e098196f557cfc1d160138
- https://git.kernel.org/stable/c/09fc018f48871123ad5dbd7b03c956580232ed76
- https://git.kernel.org/stable/c/b625883ccbcc2b57808db51d1375b1d7b9bcb3e5
- https://git.kernel.org/stable/c/45d19b4b6c2d422771c29b83462d84afcbb33f01
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