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().
Metrics
CVSS 3.1 4.7/10
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 25ee01a2fca02dfb5a3ce316e77910c468108199, < 37ee0d97298b0547cb26b6957ccfea2d356bd0e7; >= 25ee01a2fca02dfb5a3ce316e77910c468108199, < f76089018b34dbe0c2e9b67c5b7d8860668748bb; >= 25ee01a2fca02dfb5a3ce316e77910c468108199, < 2a1f3663974162b8f1e098196f557cfc1d160138; >= 25ee01a2fca02dfb5a3ce316e77910c468108199, < 09fc018f48871123ad5dbd7b03c956580232ed76; >= 25ee01a2fca02dfb5a3ce316e77910c468108199, < b625883ccbcc2b57808db51d1375b1d7b9bcb3e5; >= 25ee01a2fca02dfb5a3ce316e77910c468108199, < 45d19b4b6c2d422771c29b83462d84afcbb33f01 |
| Linux | Linux | 4.4 |
References
- https://git.kernel.org/stable/c/09fc018f48871123ad5dbd7b03c956580232ed76Patch
- https://git.kernel.org/stable/c/2a1f3663974162b8f1e098196f557cfc1d160138Patch
- https://git.kernel.org/stable/c/37ee0d97298b0547cb26b6957ccfea2d356bd0e7
- https://git.kernel.org/stable/c/45d19b4b6c2d422771c29b83462d84afcbb33f01Patch
- https://git.kernel.org/stable/c/b625883ccbcc2b57808db51d1375b1d7b9bcb3e5Patch
- https://git.kernel.org/stable/c/f76089018b34dbe0c2e9b67c5b7d8860668748bb
Timeline
- Published
- Sep 11, 2025
- Last modified
- Nov 5, 2026
- NVD status
- Modified