Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 25ee01a2fca02dfb5a3ce316e77910c468108199 before f76089018b34dbe0c2e9b67c5b7d8860668748bb; affected 25ee01a2fca02dfb5a3ce316e77910c468108199 before 2a1f3663974162b8f1e098196f557cfc1d160138; affected 25ee01a2fca02dfb5a3ce316e77910c468108199 before 09fc018f48871123ad5dbd7b03c956580232ed76; affected 25ee01a2fca02dfb5a3ce316e77910c468108199 before b625883ccbcc2b57808db51d1375b1d7b9bcb3e5; affected 25ee01a2fca02dfb5a3ce316e77910c468108199 before 45d19b4b6c2d422771c29b83462d84afcbb33f01 |
| Linux / Linux | affected 4.4; unaffected 0 before 4.4; unaffected 6.6.160 through 6.6.*; unaffected 6.12.43 through 6.12.*; unaffected 6.15.11 through 6.15.*; unaffected 6.16.2 through 6.16.*; unaffected 6.17 through * |
CWE
No CWE identifiers supplied.
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