linux: In the Linux kernel, the following vulnerability has been resolved: userfaultfd: change src_folio after ensuring it'...
CVE-2024-27007 is fixed in linux on 1 platform, first by DEBIAN-CVE-2024-27007, released May 1, 2024. It is not reported as exploited. Patch Radar priority: Routine.
In the Linux kernel, the following vulnerability has been resolved: userfaultfd: change src_folio after ensuring it's unpinned in UFFDIO_MOVE Commit d7a08838ab74 ("mm: userfaultfd: fix unexpected change to src_folio when UFFDIO_MOVE fails") moved the src_folio->{mapping, index} changing to after clearing the page-table and ensuring that it's not pinned. This avoids failure of swapout+migration and possibly memory corruption. However, the commit missed fixing it in the huge-page case.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| linux · Debian 13.5 (trixie) | 6.8.9-1 | DEBIAN-CVE-2024-27007 | May 1, 2024 |
| linux · Debian 14 | 6.8.9-1 | DEBIAN-CVE-2024-27007 | May 1, 2024 |
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