CVE-2025-39754
mm/smaps: fix race between smaps_hugetlb_range and migration
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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().
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 11, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
25ee01a2fca02dfb5a3ce316e77910c468108199 < 2a1f3663974162b8f1e098196f557cfc1d160138 25ee01a2fca02dfb5a3ce316e77910c468108199 < 09fc018f48871123ad5dbd7b03c956580232ed76 25ee01a2fca02dfb5a3ce316e77910c468108199 < b625883ccbcc2b57808db51d1375b1d7b9bcb3e5 25ee01a2fca02dfb5a3ce316e77910c468108199 < 45d19b4b6c2d422771c29b83462d84afcbb33f01
Linux / Linux
4.4
References
git.kernel.org: https://git.kernel.org/stable/c/2a1f3663974162b8f1e098196f557cfc1d160138 git.kernel.org: https://git.kernel.org/stable/c/09fc018f48871123ad5dbd7b03c956580232ed76 git.kernel.org: https://git.kernel.org/stable/c/b625883ccbcc2b57808db51d1375b1d7b9bcb3e5 git.kernel.org: https://git.kernel.org/stable/c/45d19b4b6c2d422771c29b83462d84afcbb33f01