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CVE-2021-46917

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: fix wq cleanup of WQCFG registers A pre-release silicon erratum workaround where wq reset does not clear WQCFG…

Published Feb 27, 2024CWE-668EPSS 0.22%

Overview

CVE-2021-46917 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:

dmaengine: idxd: fix wq cleanup of WQCFG registers

A pre-release silicon erratum workaround where wq reset does not clear

WQCFG registers was leaked into upstream code. Use wq reset command

instead of blasting the MMIO region. This also address an issue where

we clobber registers in future devices.

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/e5eb9757fe4c2392e069246ae78badc573af1833Refgit.kernel.org/stable/c/ea9aadc06a9f10ad20a90edc0a484f1147d88a7aRefgit.kernel.org/stable/c/f7dc8f5619165e1fa3383d0c2519f502d9e2a1a9Refgit.kernel.org/stable/c/e5eb9757fe4c2392e069246ae78badc573af1833Refgit.kernel.org/stable/c/ea9aadc06a9f10ad20a90edc0a484f1147d88a7aRefgit.kernel.org/stable/c/f7dc8f5619165e1fa3383d0c2519f502d9e2a1a9

How CyberStrike helps

Frequently asked questions

What is CVE-2021-46917?

CVE-2021-46917 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-2021-46917?

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-2021-46917?

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-2021-46917?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-46917 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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