What is CVE-2023-53006?

CVE-2023-53006 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 4.16 onward and patched in 4.19.272, 5.4.231, 5.10.166 and others. CVE-2023-53006 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-53006?

CVE-2023-53006 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-2023-53006?

Yes, CVE-2023-53006 has been patched. Fixed versions include 4.19.272, 5.4.231, 5.10.166 and others. If you are running Linux kernel 4.16 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-53006 actively exploited?

CVE-2023-53006 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2023-53006

Medium

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix oops due to uncleared server->smbd_conn in reconnect In smbd_destroy(), clear the server->smbd_conn pointer after freeing the smbd_connection struct that it points to so that reconnection doesn't get confused.

Package Linux Kernel

Published 2025-03-27

Last modified 2025-10-30

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 4.16 and later are affected. Fixed in 4.19.272, 5.4.231, 5.10.166, 5.15.91, 6.1.9, 6.2 and their respective stable series.

Affected from

≥ 4.16

Fixed in

✓ 4.19.272 4.19.x ✓ 5.4.231 5.4.x ✓ 5.10.166 5.10.x ✓ 5.15.91 5.15.x ✓ 6.1.9 6.1.x ✓ 6.2

References

The following references provide additional information about CVE-2023-53006 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/4b83bc6f87eedab4599b0123e572a422689444be
Patch
Kernel patch commit
https://git.kernel.org/stable/c/5109607a4ece7cd8536172bf7549eb4dce1f3576
Patch
Kernel patch commit
https://git.kernel.org/stable/c/91be54849d5392050f5b847b42bd5e6221551ac8
Patch

6 patch commits total View all on NVD

Details

CVE ID CVE-2023-53006

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-03-27

Modified 2025-10-30

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-53006?

CVE-2023-53006 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 4.16 onward and has been patched in 4.19.272, 5.4.231, 5.10.166 and others. CVE-2023-53006 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-53006?

CVE-2023-53006 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-2023-53006?

Yes — CVE-2023-53006 has been patched. Fixed versions include 4.19.272, 5.4.231, 5.10.166 and others. If you are running Linux kernel 4.16 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-53006 actively exploited?

No — CVE-2023-53006 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.