CVE-2025-39754
Medium
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().
SeverityMedium
CVSS4.7
Exploit probability—
Product
Linux Kernel
PublishedSep 11, 2025
First seenSep 11, 2025
Weakness typeCWE-362Race condition
How to fix
Update
- linux linux_kernel6.12.43, 6.15.11, 6.16.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 4.4 ≤ v < 6.12.43, 6.13 ≤ v < 6.15.11, 6.16 ≤ v < 6.16.2, 6.17 | 6.12.43, 6.15.11, 6.16.2 |
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