What is CVE-2023-53639?

CVE-2023-53639 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 3.9 onward and patched in 4.14.315, 4.19.283, 5.4.243 and others. CVE-2023-53639 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-53639?

CVE-2023-53639 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-2023-53639?

Yes, CVE-2023-53639 has been patched. Fixed versions include 4.14.315, 4.19.283, 5.4.243 and others. If you are running Linux kernel 3.9 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-53639 actively exploited?

CVE-2023-53639 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2023-53639

Medium

In the Linux kernel, the following vulnerability has been resolved: wifi: ath6kl: reduce WARN to dev_dbg() in callback The warn is triggered on a known race condition, documented in the code above the test, that is correctly handled. Using WARN() hinders automated testing. Reducing severity.

Package Linux Kernel

Published 2025-10-07

Last modified 2026-02-03

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 3.9 and later are affected. Fixed in 4.14.315, 4.19.283, 5.4.243, 5.10.180, 5.15.111, 6.1.28, 6.2.15, 6.3.2, 6.4 and their respective stable series.

Affected from

≥ 3.9

Fixed in

✓ 4.14.315 4.14.x ✓ 4.19.283 4.19.x ✓ 5.4.243 5.4.x ✓ 5.10.180 5.10.x ✓ 5.15.111 5.15.x ✓ 6.1.28 6.1.x ✓ 6.2.15 6.2.x ✓ 6.3.2 6.3.x ✓ 6.4

References

The following references provide additional information about CVE-2023-53639 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/0d1792c98351b7c8ebdc53d052918e77d1e512c3
Patch
Kernel patch commit
https://git.kernel.org/stable/c/1300517e371e4d0acdb0f1237477e1ed223c3a9a
Patch
Kernel patch commit
https://git.kernel.org/stable/c/484d95c69fc1143f09e4c2e3b89019d68d190a92
Patch

9 patch commits total View all on NVD

Details

CVE ID CVE-2023-53639

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-10-07

Modified 2026-02-03

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-53639?

CVE-2023-53639 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 3.9 onward and has been patched in 4.14.315, 4.19.283, 5.4.243 and others. CVE-2023-53639 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-53639?

CVE-2023-53639 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-2023-53639?

Yes — CVE-2023-53639 has been patched. Fixed versions include 4.14.315, 4.19.283, 5.4.243 and others. If you are running Linux kernel 3.9 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-53639 actively exploited?

No — CVE-2023-53639 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.