What is CVE-2026-23093?

CVE-2026-23093 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 5.15 onward and patched in 5.15.199, 6.1.162, 6.6.123 and others. CVE-2026-23093 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-23093?

CVE-2026-23093 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-2026-23093?

Yes, CVE-2026-23093 has been patched. Fixed versions include 5.15.199, 6.1.162, 6.6.123 and others. If you are running Linux kernel 5.15 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-23093 actively exploited?

CVE-2026-23093 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-23093

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(), not the value the map function returned.

Package Linux Kernel

Published 2026-02-04

Last modified 2026-03-17

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

Affected versions

Linux kernel versions 5.15 and later are affected. Fixed in 5.15.199, 6.1.162, 6.6.123, 6.12.69, 6.18.8, 6.19 and their respective stable series.

Affected from

≥ 5.15

Fixed in

✓ 5.15.199 5.15.x ✓ 6.1.162 6.1.x ✓ 6.6.123 6.6.x ✓ 6.12.69 6.12.x ✓ 6.18.8 6.18.x ✓ 6.19

References

The following references provide additional information about CVE-2026-23093 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/4d1e9a4a450aae47277763562122cc80ed703ab2
Patch
Kernel patch commit
https://git.kernel.org/stable/c/6ececffd3e9fe93a87738625dc0671165d27bf96
Patch
Kernel patch commit
https://git.kernel.org/stable/c/70ba85e439221a5d6dda34a3004db6640f0525e6
Patch

6 patch commits total View all on NVD

Details

CVE ID CVE-2026-23093

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-02-04

Modified 2026-03-17

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-23093?

CVE-2026-23093 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.15 onward and has been patched in 5.15.199, 6.1.162, 6.6.123 and others. CVE-2026-23093 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-23093?

CVE-2026-23093 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-2026-23093?

Yes — CVE-2026-23093 has been patched. Fixed versions include 5.15.199, 6.1.162, 6.6.123 and others. If you are running Linux kernel 5.15 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-23093 actively exploited?

No — CVE-2026-23093 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.