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CVE-2026-53327

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: debugobjects: Do not fill_pool() if pi_blocked_on On RT enabled kernels, fill_pool() ends up calling rtlock_lock(), which asser…

Published Jul 1, 2026EPSS 0.13%

Overview

CVE-2026-53327 is a medium-severity vulnerability. It was published on July 1, 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:

debugobjects: Do not fill_pool() if pi_blocked_on

On RT enabled kernels, fill_pool() ends up calling rtlock_lock(), which

asserts if current::pi_blocked_on is set, because a task can obviously only

block on one lock as otherwise the priority inheritenace chain gets

corrupted.

Prevent this by expanding the conditional to take current::pi_blocked_on

into account.

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/33bee10644f8fff3b1a0187ad5ad34513e5e8e72Refgit.kernel.org/stable/c/3a408cae608d9c075dd3a9e5cfc03b3cb0726863Refgit.kernel.org/stable/c/3f6a3b24ab7b9d51f6f4778254bef0e5847beb55Refgit.kernel.org/stable/c/5f41161059fd0f1bbf18c90f3180e38cc45a14ebRefgit.kernel.org/stable/c/8a680d54f1adf3e3aa815578684556716fda6f0cRefgit.kernel.org/stable/c/a3383df76f0d7a597066df018409eb9e5e698064

How CyberStrike helps

Frequently asked questions

What is CVE-2026-53327?

CVE-2026-53327 is a medium-severity vulnerability. It was published on July 1, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-53327?

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-2026-53327?

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-2026-53327?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-53327 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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