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CVE-2026-23093

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: ksmbd: smbd: fix dma_unmap_sg() nents The dma_unmap_sg() functions should be called with the same nents as the dma_map_sg(), no…

Published Feb 4, 2026EPSS 0.14%

Overview

CVE-2026-23093 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:

ksmbd: smbd: fix dma_unmap_sg() nents

The dma_unmap_sg() functions should be called with the same nents as the

dma_map_sg(), not the value the map function returned.

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/4d1e9a4a450aae47277763562122cc80ed703ab2Refgit.kernel.org/stable/c/6ececffd3e9fe93a87738625dc0671165d27bf96Refgit.kernel.org/stable/c/70ba85e439221a5d6dda34a3004db6640f0525e6Refgit.kernel.org/stable/c/98e3e2b561bc88f4dd218d1c05890672874692f6Refgit.kernel.org/stable/c/d1943bc9dc9508f5933788a76f8a35d10e43a646Refgit.kernel.org/stable/c/f569f5b8bfd5133defdf9c7f8a72c63aa11f54ec

How CyberStrike helps

Frequently asked questions

What is CVE-2026-23093?

CVE-2026-23093 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-2026-23093?

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-2026-23093?

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-2026-23093?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-23093 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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