Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.8, < 6.8.8 |
References
- https://git.kernel.org/stable/c/c0205eaf3af9f5db14d4b5ee4abacf4a583c3c50Patch
- https://git.kernel.org/stable/c/df5f6e683e7f21a15d8be6e7a0c7a46436963ebePatch
- https://git.kernel.org/stable/c/c0205eaf3af9f5db14d4b5ee4abacf4a583c3c50Patch
- https://git.kernel.org/stable/c/df5f6e683e7f21a15d8be6e7a0c7a46436963ebePatch
- https://lists.fedoraproject.org/archives/list/[email protected]
- https://lists.fedoraproject.org/archives/list/[email protected]
- https://lists.fedoraproject.org/archives/list/[email protected]
FAQ
What is CVE-2024-27007?
CVE-2024-27007 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 ch...
How severe is CVE-2024-27007?
CVE-2024-27007 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-27007?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.