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CVE-2025-71295

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: fs/buffer: add alert in try_to_free_buffers() for folios without buffers try_to_free_buffers() can be called on folios with no…

Published May 6, 2026CWE-476EPSS 0.12%

Overview

CVE-2025-71295 is a medium-severity vulnerability. It was published on May 6, 2026 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:

fs/buffer: add alert in try_to_free_buffers() for folios without buffers

try_to_free_buffers() can be called on folios with no buffers attached

when filemap_release_folio() is invoked on a folio belonging to a mapping

with AS_RELEASE_ALWAYS set but no release_folio operation defined.

In such cases, folio_needs_release() returns true because of the

AS_RELEASE_ALWAYS flag, but the folio has no private buffer data. This

causes try_to_free_buffers() to call drop_buffers() on a folio with no

buffers, leading to a null pointer dereference.

Adding a check in try_to_free_buffers() to return early if the folio has no

buffers attached, with WARN_ON_ONCE() to alert about the misconfiguration.

This provides defensive hardening.

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/1b111a69a6e33a922622bf9870e4e63fb2b649c8Refgit.kernel.org/stable/c/42c32d7571ccd8ef32351cac506f00b0fae99fd2Refgit.kernel.org/stable/c/727e5140e0cf83b4ce6a11b89bb73bff5d96f8f3Refgit.kernel.org/stable/c/b68f91ef3b3fe82ad78c417de71b675699a8467cRefgit.kernel.org/stable/c/c1b6227555c52781178132b7a06466711855795cRefgit.kernel.org/stable/c/c6246ca15999053d2632fbcc7b86e6eef7f077cb

How CyberStrike helps

Frequently asked questions

What is CVE-2025-71295?

CVE-2025-71295 is a medium-severity vulnerability. It was published on May 6, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-71295?

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-2025-71295?

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-2025-71295?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-71295 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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