CVE-2025-39754
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().
- Score
- CVSS 3.1 4.7 Medium
- Status
- Modified - 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- Published
- 2025-09-11
- Last modified
- 2026-10-21
- Weaknesses
- CWE-362
Affected products
References
- https://git.kernel.org/stable/c/f76089018b34dbe0c2e9b67c5b7d8860668748bb
- 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
