CVE-2024-26858

5.5 · MEDIUM

Published Apr 17, 2024 linux CWE-476 EPSS 0.23% (13th pctl) CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Overview

CVE-2024-26858 is a medium-severity vulnerability affecting linux linux_kernel. 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 and patches from linux. Update linux_kernel to the latest patched version. 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.

Affected Products

Vendor	Product	Versions	Status
linux	linux_kernel	>= 6.5.13, < 6.6	Affected

References

Ref git.kernel.org/stable/c/936ef086161ab89a7f38f7a0761d6a3063c3277e Ref git.kernel.org/stable/c/b7cf07586c40f926063d4d09f7de28ff82f62b2a Ref git.kernel.org/stable/c/d1f71615dbb305f14f3b756cce015d70d8667549 Ref git.kernel.org/stable/c/936ef086161ab89a7f38f7a0761d6a3063c3277e Ref git.kernel.org/stable/c/b7cf07586c40f926063d4d09f7de28ff82f62b2a Ref git.kernel.org/stable/c/d1f71615dbb305f14f3b756cce015d70d8667549

Frequently Asked Questions

What is CVE-2024-26858?

CVE-2024-26858 is a medium-severity vulnerability affecting linux linux_kernel. 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?

How can CyberStrike help with CVE-2024-26858?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-26858 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

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