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CVE-2026-23141

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: btrfs: send: check for inline extents in range_is_hole_in_parent() Before accessing the disk_bytenr field of a file extent item…

Published Feb 14, 2026EPSS 0.14%

Overview

CVE-2026-23141 is a medium-severity vulnerability. It was published on February 14, 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:

btrfs: send: check for inline extents in range_is_hole_in_parent()

Before accessing the disk_bytenr field of a file extent item we need

to check if we are dealing with an inline extent.

This is because for inline extents their data starts at the offset of

the disk_bytenr field. So accessing the disk_bytenr

means we are accessing inline data or in case the inline data is less

than 8 bytes we can actually cause an invalid

memory access if this inline extent item is the first item in the leaf

or access metadata from other items.

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/08b096c1372cd69627f4f559fb47c9fb67a52b39Refgit.kernel.org/stable/c/39f83f10772310ba4a77f2b5256aaf36994ef7e8Refgit.kernel.org/stable/c/901e581bfc44d181f7d9c3f11880dac3e89deb2eRefgit.kernel.org/stable/c/d948055bd46a9c14d1d4217aed65c5c258c32903Refgit.kernel.org/stable/c/db00636643e66898d79f2530ac9c56ebd5eca369Refgit.kernel.org/stable/c/f2dc6ab3a14c2d2eb0b14783427eb9b03bf631c9

How CyberStrike helps

Frequently asked questions

What is CVE-2026-23141?

CVE-2026-23141 is a medium-severity vulnerability. It was published on February 14, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-23141?

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-2026-23141?

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-2026-23141?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-23141 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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