Detections
Analytics
CVE-2025-38686
medium
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. [[email protected]: remove extra folio check, per David]
References
https://git.kernel.org/stable/c/bb81c18dbd42650c844e160cafa7cbb20243a96a
https://git.kernel.org/stable/c/aba6faec0103ed8f169be8dce2ead41fcb689446
https://git.kernel.org/stable/c/7f1101a0a181243ad587ececdffc4845f035549f
https://git.kernel.org/stable/c/1202abad7a7ccd28c426d2844771a387b07629a4