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CVE-2024-42098

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: crypto: ecdh - explicitly zeroize private_key private_key is overwritten with the key parameter passed in by the caller (if pre…

Published Jul 29, 2024EPSS 0.21%

Overview

CVE-2024-42098 is a medium-severity vulnerability. It was published on July 29, 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:

crypto: ecdh - explicitly zeroize private_key

private_key is overwritten with the key parameter passed in by the

caller (if present), or alternatively a newly generated private key.

However, it is possible that the caller provides a key (or the newly

generated key) which is shorter than the previous key. In that

scenario, some key material from the previous key would not be

overwritten. The easiest solution is to explicitly zeroize the entire

private_key array first.

Note that this patch slightly changes the behavior of this function:

previously, if the ecc_gen_privkey failed, the old private_key would

remain. Now, the private_key is always zeroized. This behavior is

consistent with the case where params.key is set and ecc_is_key_valid

fails.

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/39173b04abda87872b43c331468a4a14f8f05ce8Refgit.kernel.org/stable/c/73e5984e540a76a2ee1868b91590c922da8c24c9Refgit.kernel.org/stable/c/80575b252ab0358b7e93895b2a510beb3cb3f975Refgit.kernel.org/stable/c/d96187eb8e59b572a8e6a68b6a9837a867ea29dfRefgit.kernel.org/stable/c/fd7ef325911eba1b7191b83cb580463242f2090dRefgit.kernel.org/stable/c/39173b04abda87872b43c331468a4a14f8f05ce8Refgit.kernel.org/stable/c/73e5984e540a76a2ee1868b91590c922da8c24c9Refgit.kernel.org/stable/c/80575b252ab0358b7e93895b2a510beb3cb3f975Refgit.kernel.org/stable/c/d96187eb8e59b572a8e6a68b6a9837a867ea29dfRefgit.kernel.org/stable/c/fd7ef325911eba1b7191b83cb580463242f2090d

How CyberStrike helps

Frequently asked questions

What is CVE-2024-42098?

CVE-2024-42098 is a medium-severity vulnerability. It was published on July 29, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-42098?

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-2024-42098?

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-2024-42098?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-42098 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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