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().
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
25ee01a2fca02dfb5a3ce316e77910c468108199 to < f76089018b34dbe0c2e9b67c5b7d8860668748bbaffected25ee01a2fca02dfb5a3ce316e77910c468108199 to < 2a1f3663974162b8f1e098196f557cfc1d160138affected25ee01a2fca02dfb5a3ce316e77910c468108199 to < 09fc018f48871123ad5dbd7b03c956580232ed76affected25ee01a2fca02dfb5a3ce316e77910c468108199 to < b625883ccbcc2b57808db51d1375b1d7b9bcb3e5affected25ee01a2fca02dfb5a3ce316e77910c468108199 to < 45d19b4b6c2d422771c29b83462d84afcbb33f01affected
Linux Linux
Default version status: affected
4.4affected0 to < 4.4unaffected6.6.160 to ≤ 6.6.*unaffected6.12.43 to ≤ 6.12.*unaffected6.15.11 to ≤ 6.15.*unaffected6.16.2 to ≤ 6.16.*unaffected6.17 to ≤ *unaffected
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 ↗