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CVE-2024-27027

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: dpll: fix dpll_xa_ref_*_del() for multiple registrations Currently, if there are multiple registrations of the same pin on the…

Published May 1, 2024EPSS 0.26%

Overview

CVE-2024-27027 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:

dpll: fix dpll_xa_ref_*_del() for multiple registrations

Currently, if there are multiple registrations of the same pin on the

same dpll device, following warnings are observed:

WARNING: CPU: 5 PID: 2212 at drivers/dpll/dpll_core.c:143 dpll_xa_ref_pin_del.isra.0+0x21e/0x230

WARNING: CPU: 5 PID: 2212 at drivers/dpll/dpll_core.c:223 __dpll_pin_unregister+0x2b3/0x2c0

The problem is, that in both dpll_xa_ref_dpll_del() and

dpll_xa_ref_pin_del() registration is only removed from list in case the

reference count drops to zero. That is wrong, the registration has to

be removed always.

To fix this, remove the registration from the list and free

it unconditionally, instead of doing it only when the ref reference

counter reaches zero.

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/769324eb35143462542cdb15483cdaf4877bf661Refgit.kernel.org/stable/c/b27e32e9367dac024cd6f61f22655714f483fd67Refgit.kernel.org/stable/c/b446631f355ece73b13c311dd712c47381a23172Refgit.kernel.org/stable/c/769324eb35143462542cdb15483cdaf4877bf661Refgit.kernel.org/stable/c/b27e32e9367dac024cd6f61f22655714f483fd67Refgit.kernel.org/stable/c/b446631f355ece73b13c311dd712c47381a23172

How CyberStrike helps

Frequently asked questions

What is CVE-2024-27027?

CVE-2024-27027 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-2024-27027?

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-2024-27027?

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-2024-27027?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-27027 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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