Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mm/huge_memory: drop beyond-EOF folios with the right number of refs When an after-split folio is large and needs to be dropped due to EOF, folio_put_refs(folio, folio_nr_pages(folio)) should be used to drop all page cache refs. Otherwise, the folio will not be freed, causing memory leak. This leak would happen on a filesystem with blocksize > page_size and a truncate is performed, where the blocksize makes folios split to >0 order ones, causing truncated folios not being freed.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.9, < 6.12.21 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/14efb4793519d73fb2902bb0ece319b886e4b4b9Patch
- https://git.kernel.org/stable/c/86368616a9ce51f6b41efa251b6e066893851d67Patch
- https://git.kernel.org/stable/c/92ad820a1f2d95d5a8d6c2bd3f391bbb068a5f9ePatch
FAQ
What is CVE-2025-22000?
CVE-2025-22000 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: mm/huge_memory: drop beyond-EOF folios with the right number of refs When an after-split folio is large and needs to be dropped du...
How severe is CVE-2025-22000?
CVE-2025-22000 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-2025-22000?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.