# CVE-2024-27007: 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.

- Web page: https://patchblox.com/security/cve/CVE-2024-27007
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0024
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 1, 2024

## Description

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

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.8.9-1 | [DEBIAN-CVE-2024-27007](https://patchblox.com/security/data/fix/linux/debian-cve-2024-27007.md) | May 1, 2024 |
| Linux | linux Debian 14 | 6.8.9-1 | [DEBIAN-CVE-2024-27007](https://patchblox.com/security/data/fix/linux/debian-cve-2024-27007.md) | May 1, 2024 |

---

Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.