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CVE-2021-47172

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: iio: adc: ad7124: Fix potential overflow due to non sequential channel numbers Channel numbering must start at 0 and then not h…

Published Mar 25, 2024CWE-120EPSS 0.22%

Overview

CVE-2021-47172 is a medium-severity vulnerability. It was published on March 25, 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:

iio: adc: ad7124: Fix potential overflow due to non sequential channel numbers

Channel numbering must start at 0 and then not have any holes, or

it is possible to overflow the available storage. Note this bug was

introduced as part of a fix to ensure we didn't rely on the ordering

of child nodes. So we need to support arbitrary ordering but they all

need to be there somewhere.

Note I hit this when using qemu to test the rest of this series.

Arguably this isn't the best fix, but it is probably the most minimal

option for backporting etc.

Alexandru's sign-off is here because he carried this patch in a larger

set that Jonathan then applied.

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/26da8040eccc6c6b0e415e9a3baf72fd39eb2fdcRefgit.kernel.org/stable/c/f2a772c51206b0c3f262e4f6a3812c89a650191bRefgit.kernel.org/stable/c/f49149964d2423fb618fb6b755bb1eaa431cca2cRefgit.kernel.org/stable/c/f70122825076117787b91e7f219e21c09f11a5b9Refgit.kernel.org/stable/c/26da8040eccc6c6b0e415e9a3baf72fd39eb2fdcRefgit.kernel.org/stable/c/f2a772c51206b0c3f262e4f6a3812c89a650191bRefgit.kernel.org/stable/c/f49149964d2423fb618fb6b755bb1eaa431cca2cRefgit.kernel.org/stable/c/f70122825076117787b91e7f219e21c09f11a5b9

How CyberStrike helps

Frequently asked questions

What is CVE-2021-47172?

CVE-2021-47172 is a medium-severity vulnerability. It was published on March 25, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2021-47172?

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-2021-47172?

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-2021-47172?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-47172 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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