Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: userfaultfd: A crash occurred during UFFDIOMOVE when PMD is a migration entry. When UFFDIOMOVE encounters a migration PMD entry, it proceeds to obtain a folio and access it, even though the entry type is swpentryt. We have added...

CVE-2025-38686 userfaultfd: fix a crash in UFFDIO_MOVE when PMD is a migration entry

In the Linux kernel, the following vulnerability has been resolved: userfaultfd: fix a crash in UFFDIOMOVE when PMD is a migration entry When UFFDIOMOVE encounters a migration PMD entry, it proceeds with obtaining a folio and accessing it even though the entry is swpentryt. Add the missing check...