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CVE-2026-23084

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: be2net: Fix NULL pointer dereference in be_cmd_get_mac_from_list When the parameter pmac_id_valid argument of be_cmd_get_mac_fr…

Published Feb 4, 2026CWE-476EPSS 0.15%

Overview

CVE-2026-23084 is a medium-severity vulnerability. It was published on February 4, 2026 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:

be2net: Fix NULL pointer dereference in be_cmd_get_mac_from_list

When the parameter pmac_id_valid argument of be_cmd_get_mac_from_list() is

set to false, the driver may request the PMAC_ID from the firmware of the

network card, and this function will store that PMAC_ID at the provided

address pmac_id. This is the contract of this function.

However, there is a location within the driver where both

pmac_id_valid == false and pmac_id == NULL are being passed. This could

result in dereferencing a NULL pointer.

To resolve this issue, it is necessary to pass the address of a stub

variable to the function.

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/31410a01a86bcb98c798d01061abf1f789c4f75aRefgit.kernel.org/stable/c/47ffb4dcffe336f4a7bd0f3284be7aadc6484698Refgit.kernel.org/stable/c/4cba480c9b9a3861a515262225cb53a1f5978344Refgit.kernel.org/stable/c/6c3e00888dbec887125a08b51a705b9b163fcdd1Refgit.kernel.org/stable/c/8215794403d264739cc676668087512950b2ff31Refgit.kernel.org/stable/c/92c6dc181a18e6e0ddb872ed35cb48a9274829e4Refgit.kernel.org/stable/c/e206fb415db36bad52bb90c08d46ce71ffbe8a80Refcert-portal.siemens.com/productcert/html/ssa-019113.html

How CyberStrike helps

Frequently asked questions

What is CVE-2026-23084?

CVE-2026-23084 is a medium-severity vulnerability. It was published on February 4, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-23084?

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-2026-23084?

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-2026-23084?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-23084 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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