Answer in brief
CVE-2024-27007 records a High severity (CVSS 7.8) vulnerability in userfaultfd: change src_folio after ensuring it's unpinned in UFFDIO_MOVE. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=adef440691bab824e39c1b17382322d195e1fab0 <df5f6e683e7f21a15d8be6e7a0c7a46436963ebe || >=adef440691bab824e39c1b17382322d195e1fab0 <c0205eaf3af9f5db14d4b5ee4abacf4a583c3c50 | df5f6e683e7f21a15d8be6e7a0c7a46436963ebe, c0205eaf3af9f5db14d4b5ee4abacf4a583c3c50 |
| Linux/Linuxgeneric | 6.8 | Not reported |
Published upstream
May 1, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.