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CVE-2021-46926

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: ALSA: hda: intel-sdw-acpi: harden detection of controller The existing code currently sets a pointer to an ACPI handle before c…

Published Feb 27, 2024EPSS 0.21%

Overview

CVE-2021-46926 is a medium-severity vulnerability. It was published on February 27, 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:

ALSA: hda: intel-sdw-acpi: harden detection of controller

The existing code currently sets a pointer to an ACPI handle before

checking that it's actually a SoundWire controller. This can lead to

issues where the graph walk continues and eventually fails, but the

pointer was set already.

This patch changes the logic so that the information provided to

the caller is set when a controller is found.

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/385f287f9853da402d94278e59f594501c1d1dadRefgit.kernel.org/stable/c/cce476954401e3421afafb25bbaa926050688b1dRefgit.kernel.org/stable/c/385f287f9853da402d94278e59f594501c1d1dadRefgit.kernel.org/stable/c/cce476954401e3421afafb25bbaa926050688b1d

How CyberStrike helps

Frequently asked questions

What is CVE-2021-46926?

CVE-2021-46926 is a medium-severity vulnerability. It was published on February 27, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2021-46926?

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-2021-46926?

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-2021-46926?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-46926 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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