CVE-2024-49872
mm/gup: fix memfd_pin_folios alloc race panic
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: mm/gup: fix memfd_pin_folios alloc race panic If memfd_pin_folios tries to create a hugetlb page, but someone else already did, then folio gets the value -EEXIST here: folio = memfd_alloc_folio(memfd, start_idx); if (IS_ERR(folio)) { ret = PTR_ERR(folio); if (ret != -EEXIST) goto err; then on the next trip through the "while start_idx" loop we panic here: if (folio) { folio_put(folio); To fix, set the folio to NULL on error.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Oct 21, 2024 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
89c1905d9c140372b7f50ef48f42378cf85d9bc5 < e28f39b359c0cfdcc011603e51187085a5f1e5e3 89c1905d9c140372b7f50ef48f42378cf85d9bc5 < ce645b9fdc78ec5d28067286e92871ddae6817d5
Linux / Linux
6.11