What is CVE-2023-32249?

CVE-2023-32249 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 5.15 onward and patched in 5.15.112, 6.1.28, 6.2.15 and others. CVE-2023-32249 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-32249?

CVE-2023-32249 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-2023-32249?

Yes, CVE-2023-32249 has been patched. Fixed versions include 5.15.112, 6.1.28, 6.2.15 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-2023-32249 actively exploited?

CVE-2023-32249 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2023-32249

Medium

In the Linux kernel, the following vulnerability has been resolved: ksmbd: not allow guest user on multichannel This patch return STATUS_NOT_SUPPORTED if binding session is guest.

Package Linux Kernel

Published 2025-08-16

Last modified 2025-11-18

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 5.15 and later are affected. Fixed in 5.15.112, 6.1.28, 6.2.15, 6.3.2, 6.4 and their respective stable series.

Affected from

≥ 5.15

Fixed in

✓ 5.15.112 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-2023-32249 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/088131b7b01099720a528a72005ff17868705d40
Patch
Kernel patch commit
https://git.kernel.org/stable/c/1f0490586544455e5be698be2e6c30077b4ec461
Patch
Kernel patch commit
https://git.kernel.org/stable/c/3353ab2df5f68dab7da8d5ebb427a2d265a1f2b2
Patch

5 patch commits total View all on NVD

Details

CVE ID CVE-2023-32249

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-08-16

Modified 2025-11-18

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-32249?

CVE-2023-32249 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.15 onward and has been patched in 5.15.112, 6.1.28, 6.2.15 and others. CVE-2023-32249 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-32249?

CVE-2023-32249 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-2023-32249?

Yes — CVE-2023-32249 has been patched. Fixed versions include 5.15.112, 6.1.28, 6.2.15 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-2023-32249 actively exploited?

No — CVE-2023-32249 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.