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CVE-2021-47051

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: spi: fsl-lpspi: Fix PM reference leak in lpspi_prepare_xfer_hardware() pm_runtime_get_sync will increment pm usage counter even…

Published Feb 28, 2024EPSS 0.22%

Overview

CVE-2021-47051 is a medium-severity vulnerability. It was published on February 28, 2024 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:

spi: fsl-lpspi: Fix PM reference leak in lpspi_prepare_xfer_hardware()

pm_runtime_get_sync will increment pm usage counter even it failed.

Forgetting to putting operation will result in reference leak here.

Fix it by replacing it with pm_runtime_resume_and_get to keep usage

counter balanced.

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/4a01ad002d2e03c399af536562693752af7c81b1Refgit.kernel.org/stable/c/6a2b5cee0d31ab6cc51030c441135b0e31217282Refgit.kernel.org/stable/c/a03675497970a93fcf25d81d9d92a59c2d7377a7Refgit.kernel.org/stable/c/b8207bfc539cd07d15e753ff2d179c5b61c673b1Refgit.kernel.org/stable/c/ce02e58ddf8658a4c3bed2296f32a5873b3f7cceRefgit.kernel.org/stable/c/4a01ad002d2e03c399af536562693752af7c81b1Refgit.kernel.org/stable/c/6a2b5cee0d31ab6cc51030c441135b0e31217282Refgit.kernel.org/stable/c/a03675497970a93fcf25d81d9d92a59c2d7377a7Refgit.kernel.org/stable/c/b8207bfc539cd07d15e753ff2d179c5b61c673b1Refgit.kernel.org/stable/c/ce02e58ddf8658a4c3bed2296f32a5873b3f7cce

How CyberStrike helps

Frequently asked questions

What is CVE-2021-47051?

CVE-2021-47051 is a medium-severity vulnerability. It was published on February 28, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2021-47051?

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-2021-47051?

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-2021-47051?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-47051 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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