What is CVE-2024-26858?

CVE-2024-26858 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a NULL Pointer Dereference flaw (CWE-476), affecting Linux kernel versions from 6.6.3 onward and patched in 6.6.22, 6.7.10 and 6.8. CVE-2024-26858 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-26858?

CVE-2024-26858 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2024-26858?

Yes, CVE-2024-26858 has been patched. Fixed versions include 6.6.22, 6.7.10 and 6.8. If you are running Linux kernel 6.6.3 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-26858 actively exploited?

CVE-2024-26858 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is NULL Pointer Dereference (CWE-476)?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/476.html

CVE-2024-26858

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 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.

Package Linux Kernel

Published 2024-04-17

Last modified 2025-03-04

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-476

CVE-2024-26858 is a NULL Pointer Dereference vulnerability

What is NULL Pointer Dereference?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.6.3, 6.5.13, 6.7 and later are affected. Fixed in 6.6.22, 6.7.10, 6.8 and their respective stable series.

Affected from

≥ 6.6.3 ≥ 6.5.13 ≥ 6.7

Fixed in

✓ 6.6.22 6.6.x ✓ 6.7.10 6.7.x ✓ 6.8

References

3 total

Kernel Git
https://git.kernel.org/stable/c/936ef086161ab89a7f38f7a0761d6a3063c3277e

Mailing List Patch
Kernel Git
https://git.kernel.org/stable/c/b7cf07586c40f926063d4d09f7de28ff82f62b2a

Mailing List Patch
Kernel Git
https://git.kernel.org/stable/c/d1f71615dbb305f14f3b756cce015d70d8667549

Mailing List Patch

Details

CVE ID CVE-2024-26858

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-04-17

Modified 2025-03-04

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-26858?

CVE-2024-26858 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a NULL Pointer Dereference flaw (CWE-476) . It affects Linux kernel versions from 6.6.3 onward and has been patched in 6.6.22, 6.7.10 and 6.8. CVE-2024-26858 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-26858?

CVE-2024-26858 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2024-26858?

Yes. CVE-2024-26858 has been patched. Fixed versions include 6.6.22, 6.7.10 and 6.8. If you are running Linux kernel 6.6.3 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-26858 actively exploited?

No. CVE-2024-26858 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.