What is CVE-2025-38406?

CVE-2025-38406 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 3.2 onward and patched in 5.4.296, 5.10.240, 5.15.187 and others. CVE-2025-38406 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-38406?

CVE-2025-38406 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-2025-38406?

Yes, CVE-2025-38406 has been patched. Fixed versions include 5.4.296, 5.10.240, 5.15.187 and others. If you are running Linux kernel 3.2 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-38406 actively exploited?

CVE-2025-38406 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2025-38406

Medium

In the Linux kernel, the following vulnerability has been resolved: wifi: ath6kl: remove WARN on bad firmware input If the firmware gives bad input, that's nothing to do with the driver's stack at this point etc., so the WARN_ON() doesn't add any value. Additionally, this is one of the top syzbot reports now. Just print a message, and as an added bonus, print the sizes too.

Package Linux Kernel

Published 2025-07-25

Last modified 2025-12-23

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 3.2 and later are affected. Fixed in 5.4.296, 5.10.240, 5.15.187, 6.1.144, 6.6.97, 6.12.37, 6.15.6, 6.16 and their respective stable series.

Affected from

≥ 3.2

Fixed in

✓ 5.4.296 5.4.x ✓ 5.10.240 5.10.x ✓ 5.15.187 5.15.x ✓ 6.1.144 6.1.x ✓ 6.6.97 6.6.x ✓ 6.12.37 6.12.x ✓ 6.15.6 6.15.x ✓ 6.16

References

The following references provide additional information about CVE-2025-38406 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Debian Security
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html

Third Party Advisory
Debian Security
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html

Third Party Advisory
Kernel patch commit
https://git.kernel.org/stable/c/27d07deea35ae67f2e75913242e25bdb7e1114e5
Patch
Kernel patch commit
https://git.kernel.org/stable/c/327997afbb5e62532c28c1861ab5534c01969c9a
Patch
Kernel patch commit
https://git.kernel.org/stable/c/347827bd0c5680dac2dd59674616840c4d5154f1
Patch

8 patch commits total View all on NVD

Details

CVE ID CVE-2025-38406

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-07-25

Modified 2025-12-23

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-38406?

CVE-2025-38406 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 3.2 onward and has been patched in 5.4.296, 5.10.240, 5.15.187 and others. CVE-2025-38406 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-38406?

CVE-2025-38406 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-2025-38406?

Yes — CVE-2025-38406 has been patched. Fixed versions include 5.4.296, 5.10.240, 5.15.187 and others. If you are running Linux kernel 3.2 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-38406 actively exploited?

No — CVE-2025-38406 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.