Description
In the Linux kernel, the following vulnerability has been resolved: userfaultfd: fix a crash in UFFDIO_MOVE when PMD is a migration entry When UFFDIO_MOVE encounters a migration PMD entry, it proceeds with obtaining a folio and accessing it even though the entry is swp_entry_t. Add the missing check and let split_huge_pmd() handle migration entries. While at it also remove unnecessary folio check. [surenb@google.com: remove extra folio check, per David]
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
adef440691bab824e39c1b17382322d195e1fab0 to < bb81c18dbd42650c844e160cafa7cbb20243a96aaffectedadef440691bab824e39c1b17382322d195e1fab0 to < 1202abad7a7ccd28c426d2844771a387b07629a4affectedadef440691bab824e39c1b17382322d195e1fab0 to < 7f1101a0a181243ad587ececdffc4845f035549faffectedadef440691bab824e39c1b17382322d195e1fab0 to < aba6faec0103ed8f169be8dce2ead41fcb689446affected
Linux Linux
Default version status: affected
6.8affected0 to < 6.8unaffected6.12.43 to ≤ 6.12.*unaffected6.15.11 to ≤ 6.15.*unaffected6.16.2 to ≤ 6.16.*unaffected6.17 to ≤ *unaffected