Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.11, < 6.11.3 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/ce645b9fdc78ec5d28067286e92871ddae6817d5Patch
- https://git.kernel.org/stable/c/e28f39b359c0cfdcc011603e51187085a5f1e5e3Patch
FAQ
What is CVE-2024-49872?
CVE-2024-49872 is a vulnerability with a CVSS score of 4.7 (MEDIUM). 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, th...
How severe is CVE-2024-49872?
CVE-2024-49872 has been rated MEDIUM with a CVSS base score of 4.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-49872?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.