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CVE-2021-47098

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: hwmon: (lm90) Prevent integer overflow/underflow in hysteresis calculations Commit b50aa49638c7 ("hwmon: (lm90) Prevent integer…

Published Mar 4, 2024CWE-190EPSS 0.22%

Overview

CVE-2021-47098 is a high-severity vulnerability. It was published on March 4, 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:

hwmon: (lm90) Prevent integer overflow/underflow in hysteresis calculations

Commit b50aa49638c7 ("hwmon: (lm90) Prevent integer underflows of

temperature calculations") addressed a number of underflow situations

when writing temperature limits. However, it missed one situation, seen

when an attempt is made to set the hysteresis value to MAX_LONG and the

critical temperature limit is negative.

Use clamp_val() when setting the hysteresis temperature to ensure that

the provided value can never overflow or underflow.

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/55840b9eae5367b5d5b29619dc2fb7e4596dba46Refgit.kernel.org/stable/c/d105f30bea9104c590a9e5b495cb8a49bdfe405fRefgit.kernel.org/stable/c/55840b9eae5367b5d5b29619dc2fb7e4596dba46Refgit.kernel.org/stable/c/d105f30bea9104c590a9e5b495cb8a49bdfe405f

How CyberStrike helps

Frequently asked questions

What is CVE-2021-47098?

CVE-2021-47098 is a high-severity vulnerability. It was published on March 4, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2021-47098?

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-2021-47098?

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-2021-47098?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-47098 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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