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CVE-2024-26858

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Use a memory barrier to enforce PTP WQ xmit submission tracking occurs after populating the metadata_map Just simply…

Published Apr 17, 2024CWE-476EPSS 0.23%

Overview

CVE-2024-26858 is a medium-severity vulnerability. It was published on April 17, 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:

net/mlx5e: Use a memory barrier to enforce PTP WQ xmit submission tracking occurs after populating the metadata_map

Just simply reordering the functions mlx5e_ptp_metadata_map_put and

mlx5e_ptpsq_track_metadata in the mlx5e_txwqe_complete context is not good

enough since both the compiler and CPU are free to reorder these two

functions. If reordering does occur, the issue that was supposedly fixed by

7e3f3ba97e6c ("net/mlx5e: Track xmit submission to PTP WQ after populating

metadata map") will be seen. This will lead to NULL pointer dereferences in

mlx5e_ptpsq_mark_ts_cqes_undelivered in the NAPI polling context due to the

tracking list being populated before the metadata map.

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/936ef086161ab89a7f38f7a0761d6a3063c3277eRefgit.kernel.org/stable/c/b7cf07586c40f926063d4d09f7de28ff82f62b2aRefgit.kernel.org/stable/c/d1f71615dbb305f14f3b756cce015d70d8667549Refgit.kernel.org/stable/c/936ef086161ab89a7f38f7a0761d6a3063c3277eRefgit.kernel.org/stable/c/b7cf07586c40f926063d4d09f7de28ff82f62b2aRefgit.kernel.org/stable/c/d1f71615dbb305f14f3b756cce015d70d8667549

How CyberStrike helps

Frequently asked questions

What is CVE-2024-26858?

CVE-2024-26858 is a medium-severity vulnerability. It was published on April 17, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-26858?

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-2024-26858?

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-2024-26858?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-26858 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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