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CVE-2025-71269

7.5 · HIGH

In the Linux kernel, the following vulnerability has been resolved: btrfs: do not free data reservation in fallback from inline due to -ENOSPC If we fail to create an inline extent due to -ENOSPC…

Published Mar 18, 2026EPSS 0.23%

Overview

CVE-2025-71269 is a high-severity vulnerability. It was published on March 18, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

btrfs: do not free data reservation in fallback from inline due to -ENOSPC

If we fail to create an inline extent due to -ENOSPC, we will attempt to

go through the normal COW path, reserve an extent, create an ordered

extent, etc. However we were always freeing the reserved qgroup data,

which is wrong since we will use data. Fix this by freeing the reserved

qgroup data in __cow_file_range_inline() only if we are not doing the

fallback (ret is <= 0).

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/0a1fbbd780f04d1b6cf48dd327c866ba937de1c4Refgit.kernel.org/stable/c/3a9fd45afadec1fbfec72057b9473d509fa8b68cRefgit.kernel.org/stable/c/3edd1f6c7c520536b62b2904807033597554dbacRefgit.kernel.org/stable/c/6de3a371a8b9fd095198b1aa68c22cc10a4c6961Refgit.kernel.org/stable/c/f8da41de0bff9eb1d774a7253da0c9f637c4470a

How CyberStrike helps

Frequently asked questions

What is CVE-2025-71269?

CVE-2025-71269 is a high-severity vulnerability. It was published on March 18, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-71269?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-71269?

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-2025-71269?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-71269 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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