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CVE-2026-45888

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: md/raid1: fix memory leak in raid1_run() raid1_run() calls setup_conf() which registers a thread via md_register_thread().

Published May 27, 2026CWE-401EPSS 0.16%

Overview

CVE-2026-45888 is a medium-severity vulnerability. It was published on May 27, 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:

md/raid1: fix memory leak in raid1_run()

raid1_run() calls setup_conf() which registers a thread via

md_register_thread(). If raid1_set_limits() fails, the previously

registered thread is not unregistered, resulting in a memory leak

of the md_thread structure and the thread resource itself.

Add md_unregister_thread() to the error path to properly cleanup

the thread, which aligns with the error handling logic of other paths

in this function.

Compile tested only. Issue found using a prototype static analysis tool

and code review.

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/6abc7d5dcf0ee0f85e16e41c87fbd06231f28753Refgit.kernel.org/stable/c/b37588b0282a2b3cdda9db1d53712745ce66dea0Refgit.kernel.org/stable/c/c94fd6e8a71efd047ff36930e840f3c25679e136Refgit.kernel.org/stable/c/ec10e3dc93994b87adf7c759a4639fe34013989a

How CyberStrike helps

Frequently asked questions

What is CVE-2026-45888?

CVE-2026-45888 is a medium-severity vulnerability. It was published on May 27, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-45888?

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-2026-45888?

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-2026-45888?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-45888 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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