CVE-2024-26858

Name: CVE-2024-26858
Creator: NVD / NIST
Published: 2024-04-17T11:15:08.84+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.23%

Last modified Jun 17, 2026

CVE-2024-26858 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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. EPSS estimates a 0.23% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.23%

13.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions	Update
Linux	Linux Kernel	>= 6.5.13, < 6.6	—
Linux	Linux Kernel	>= 6.6.3, < 6.6.22	—
Linux	Linux Kernel	>= 6.7, < 6.7.10	—
Linux	Linux Kernel	6.8	Rc1

References

https://git.kernel.org/stable/c/936ef086161ab89a7f38f7a0761d6a3063c3277eMailing List, Patch
https://git.kernel.org/stable/c/b7cf07586c40f926063d4d09f7de28ff82f62b2aMailing List, Patch
https://git.kernel.org/stable/c/d1f71615dbb305f14f3b756cce015d70d8667549Mailing List, Patch
https://git.kernel.org/stable/c/936ef086161ab89a7f38f7a0761d6a3063c3277eMailing List, Patch
https://git.kernel.org/stable/c/b7cf07586c40f926063d4d09f7de28ff82f62b2aMailing List, Patch
https://git.kernel.org/stable/c/d1f71615dbb305f14f3b756cce015d70d8667549Mailing List, Patch

Timeline

Published: Apr 17, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-26858?

How severe is CVE-2024-26858?

CVE-2024-26858 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.23% probability of exploitation in the next 30 days.

How do I fix CVE-2024-26858?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-26858?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST