What is CVE-2023-53321?

CVE-2023-53321 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10, affecting Linux kernel versions from 5.4 onward and patched in 5.4.257, 5.10.197, 5.15.133 and others. CVE-2023-53321 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-53321?

CVE-2023-53321 has a CVSS score of 7.1 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:N/A:H.

Is there a patch available for CVE-2023-53321?

Yes, CVE-2023-53321 has been patched. Fixed versions include 5.4.257, 5.10.197, 5.15.133 and others. If you are running Linux kernel 5.4 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-53321 actively exploited?

CVE-2023-53321 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2023-53321

High

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211_hwsim: drop short frames While technically some control frames like ACK are shorter and end after Address 1, such frames shouldn't be forwarded through wmediumd or similar userspace, so require the full 3-address header to avoid accessing invalid memory if shorter frames are passed in.

Package Linux Kernel

Published 2025-09-16

Last modified 2026-01-14

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.1

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

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

Affected versions

Linux kernel versions 5.4 and later are affected. Fixed in 5.4.257, 5.10.197, 5.15.133, 6.1.55, 6.5.5, 6.6 and their respective stable series.

Affected from

≥ 5.4

Fixed in

✓ 5.4.257 5.4.x ✓ 5.10.197 5.10.x ✓ 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-2023-53321 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/3beb97bed860d95b14ad23578ce8ddaea62023db
Patch
Kernel patch commit
https://git.kernel.org/stable/c/672205c6f2d11978fcd7f0f336bb2c708e28874b
Patch
Kernel patch commit
https://git.kernel.org/stable/c/89a41ed7f21476301659ebd25ccb48a60791c1a7
Patch

6 patch commits total View all on NVD

Details

CVE ID CVE-2023-53321

Severity High

CVSS score 7.1 / 10

CVSS version 3.1

Published 2025-09-16

Modified 2026-01-14

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-53321?

CVE-2023-53321 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10 . It affects Linux kernel versions from 5.4 onward and has been patched in 5.4.257, 5.10.197, 5.15.133 and others. CVE-2023-53321 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-53321?

CVE-2023-53321 has a CVSS score of 7.1 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:N/A:H.
Is there a patch available for CVE-2023-53321?

Yes — CVE-2023-53321 has been patched. Fixed versions include 5.4.257, 5.10.197, 5.15.133 and others. If you are running Linux kernel 5.4 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-53321 actively exploited?

No — CVE-2023-53321 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.