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CVE-2024-27038

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: clk: Fix clk_core_get NULL dereference It is possible for clk_core_get to dereference a NULL in the following sequence: clk_co…

Published May 1, 2024CWE-476EPSS 0.29%

Overview

CVE-2024-27038 is a medium-severity vulnerability. It was published on May 1, 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:

clk: Fix clk_core_get NULL dereference

It is possible for clk_core_get to dereference a NULL in the following

sequence:

clk_core_get()

of_clk_get_hw_from_clkspec()

__of_clk_get_hw_from_provider()

__clk_get_hw()

__clk_get_hw() can return NULL which is dereferenced by clk_core_get() at

hw->core.

Prior to commit dde4eff47c82 ("clk: Look for parents with clkdev based

clk_lookups") the check IS_ERR_OR_NULL() was performed which would have

caught the NULL.

Reading the description of this function it talks about returning NULL but

that cannot be so at the moment.

Update the function to check for hw before dereferencing it and return NULL

if hw is NULL.

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/0efb9ef6fb95384ba631d6819e66f10392aabfa2Refgit.kernel.org/stable/c/239174535dba11f7b83de0eaaa27909024f8c185Refgit.kernel.org/stable/c/6f073b24a9e2becd25ac4505a9780a87e621bb51Refgit.kernel.org/stable/c/a5d9b1aa61b401867b9066d54086b3e4ee91f8edRefgit.kernel.org/stable/c/a8b2b26fdd011ebe36d68a9a321ca45801685959Refgit.kernel.org/stable/c/c554badcae9c45b737a22d23454170c6020b90e6Refgit.kernel.org/stable/c/d7ae7d1265686b55832a445b1db8cdd69738ac07Refgit.kernel.org/stable/c/e97fe4901e0f59a0bfd524578fe3768f8ca42428Refgit.kernel.org/stable/c/0efb9ef6fb95384ba631d6819e66f10392aabfa2Refgit.kernel.org/stable/c/239174535dba11f7b83de0eaaa27909024f8c185

How CyberStrike helps

Frequently asked questions

What is CVE-2024-27038?

CVE-2024-27038 is a medium-severity vulnerability. It was published on May 1, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-27038?

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-2024-27038?

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-2024-27038?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-27038 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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