CVE-2024-27007

In the Linux kernel, the following vulnerability has been resolved: userfaultfd: change srcfolio after ensuring it's unpinned in UFFDIOMOVE Commit d7a08838ab74 "mm: userfaultfd: fix unexpected change to srcfolio when UFFDIOMOVE fails" moved the srcfolio-mapping, index changing to after clearing t...

CVE-2024-27007 userfaultfd: change src_folio after ensuring it's unpinned in UFFDIO_MOVE

In the Linux kernel, the following vulnerability has been resolved: userfaultfd: change srcfolio after ensuring it's unpinned in UFFDIOMOVE Commit d7a08838ab74 "mm: userfaultfd: fix unexpected change to srcfolio when UFFDIOMOVE fails" moved the srcfolio-mapping, index changing to after clearing t...

CVE-2024-27007 userfaultfd: change src_folio after ensuring it's unpinned in UFFDIO_MOVE

In the Linux kernel, the following vulnerability has been resolved: userfaultfd: change srcfolio after ensuring it's unpinned in UFFDIOMOVE Commit d7a08838ab74 "mm: userfaultfd: fix unexpected change to srcfolio when UFFDIOMOVE fails" moved the srcfolio-mapping, index changing to after clearing t...

CVE-2024-27007

The CVE-2024-27007 issue affects the Linux kernel, specifically the userfaultfd path for UFFDIO_MOVE. The root cause was an incorrect update of src_folio (mapping/index) before the page-table is cleared and after unpin, risking memory corruption and swapout/migration failure. A fix was implemente...