CVE-2024-27007
High
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.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedMay 1, 2024
First seenMay 1, 2024
How to fix
Update
- linux linux_kernel6.8.8 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 6.8 ≤ v < 6.8.8, 6.9 | 6.8.8 |
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