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CVE-2025-22000

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…

Published Apr 3, 2025CWE-401EPSS 0.19%

Overview

CVE-2025-22000 is a medium-severity vulnerability. It was published on April 3, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/14efb4793519d73fb2902bb0ece319b886e4b4b9Refgit.kernel.org/stable/c/86368616a9ce51f6b41efa251b6e066893851d67Refgit.kernel.org/stable/c/92ad820a1f2d95d5a8d6c2bd3f391bbb068a5f9e

How CyberStrike helps

Frequently asked questions

What is CVE-2025-22000?

CVE-2025-22000 is a medium-severity vulnerability. It was published on April 3, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-22000?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2025-22000?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-22000?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-22000 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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