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CVE-2021-47474

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: comedi: vmk80xx: fix bulk-buffer overflow The driver is using endpoint-sized buffers but must not assume that the tx and rx buf…

Published May 22, 2024CWE-787EPSS 0.26%

Overview

CVE-2021-47474 is a high-severity vulnerability. It was published on May 22, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. 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:

comedi: vmk80xx: fix bulk-buffer overflow

The driver is using endpoint-sized buffers but must not assume that the

tx and rx buffers are of equal size or a malicious device could overflow

the slab-allocated receive buffer when doing bulk transfers.

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/063f576c43d589a4c153554b681d32b3f8317c7bRefgit.kernel.org/stable/c/0866dcaa828c21bc2f94dac00e086078f11b5772Refgit.kernel.org/stable/c/1ae4715121a57bc6fa29fd992127b01907f2f993Refgit.kernel.org/stable/c/47b4636ebdbeba2044b3db937c4d2b6a4fe3d0f2Refgit.kernel.org/stable/c/78cdfd62bd54af615fba9e3ca1ba35de39d3871dRefgit.kernel.org/stable/c/7b0e356189327287d0eb98ec081bd6dd97068cd3Refgit.kernel.org/stable/c/7cfb35db607760698d299fd1cf7402dfa8f09973Refgit.kernel.org/stable/c/b7fd7f3387f070215e6be341e68eb5c087eeecc0Refgit.kernel.org/stable/c/e0e6a63fd97ad95fe05dfd77268a1952551e11a7Refgit.kernel.org/stable/c/063f576c43d589a4c153554b681d32b3f8317c7b

How CyberStrike helps

Frequently asked questions

What is CVE-2021-47474?

CVE-2021-47474 is a high-severity vulnerability. It was published on May 22, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2021-47474?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-47474?

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-2021-47474?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-47474 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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