What is CVE-2023-53257?

CVE-2023-53257 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 5.15 onward and patched in 5.15.133, 6.1.55, 6.5.5 and others. CVE-2023-53257 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-53257?

CVE-2023-53257 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2023-53257?

Yes, CVE-2023-53257 has been patched. Fixed versions include 5.15.133, 6.1.55, 6.5.5 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-2023-53257 actively exploited?

CVE-2023-53257 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2023-53257

High

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: check S1G action frame size Before checking the action code, check that it even exists in the frame.

Package Linux Kernel

Published 2025-09-15

Last modified 2026-01-14

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected versions

Linux kernel versions 5.15 and later are affected. Fixed in 5.15.133, 6.1.55, 6.5.5, 6.6 and their respective stable series.

Affected from

≥ 5.15

Fixed in

✓ 5.15.133 5.15.x ✓ 6.1.55 6.1.x ✓ 6.5.5 6.5.x ✓ 6.6

References

The following references provide additional information about CVE-2023-53257 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/19e4a47ee74718a22e963e8a647c8c3bfe8bb05c
Patch
Kernel patch commit
https://git.kernel.org/stable/c/5e030a2509be72b452b6f4a800786d43229414db
Patch
Kernel patch commit
https://git.kernel.org/stable/c/7ae7a1378a119780c8c17a6b5fc03011c3bb7029
Patch

4 patch commits total View all on NVD

Details

CVE ID CVE-2023-53257

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2025-09-15

Modified 2026-01-14

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-53257?

CVE-2023-53257 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 5.15 onward and has been patched in 5.15.133, 6.1.55, 6.5.5 and others. CVE-2023-53257 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-53257?

CVE-2023-53257 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2023-53257?

Yes — CVE-2023-53257 has been patched. Fixed versions include 5.15.133, 6.1.55, 6.5.5 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-2023-53257 actively exploited?

No — CVE-2023-53257 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.