What is CVE-2026-23135?

CVE-2026-23135 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.3 onward and patched in 6.6.122, 6.12.68, 6.18.8 and others. CVE-2026-23135 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-23135?

CVE-2026-23135 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-2026-23135?

Yes, CVE-2026-23135 has been patched. Fixed versions include 6.6.122, 6.12.68, 6.18.8 and others. If you are running Linux kernel 6.3 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-23135 actively exploited?

CVE-2026-23135 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-23135

Medium

In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: fix dma_free_coherent() pointer dma_alloc_coherent() allocates a DMA mapped buffer and stores the addresses in XXX_unaligned fields. Those should be reused when freeing the buffer rather than the aligned addresses.

Package Linux Kernel

Published 2026-02-14

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 6.3 and later are affected. Fixed in 6.6.122, 6.12.68, 6.18.8, 6.19 and their respective stable series.

Affected from

≥ 6.3

Fixed in

✓ 6.6.122 6.6.x ✓ 6.12.68 6.12.x ✓ 6.18.8 6.18.x ✓ 6.19

References

The following references provide additional information about CVE-2026-23135 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/24585a13c41ea7253ee59aac74441fb570f5824a
Patch
Kernel patch commit
https://git.kernel.org/stable/c/36e0bc5e8b282564906fca636c4ebc99814de4e7
Patch
Kernel patch commit
https://git.kernel.org/stable/c/4846b32be324f4dd3653f38a3f69c049543d52ae
Patch

4 patch commits total View all on NVD

Details

CVE ID CVE-2026-23135

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-02-14

Modified 2026-03-17

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-23135?

CVE-2026-23135 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.3 onward and has been patched in 6.6.122, 6.12.68, 6.18.8 and others. CVE-2026-23135 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-23135?

CVE-2026-23135 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-2026-23135?

Yes — CVE-2026-23135 has been patched. Fixed versions include 6.6.122, 6.12.68, 6.18.8 and others. If you are running Linux kernel 6.3 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-23135 actively exploited?

No — CVE-2026-23135 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.