CVE-2023-32249: ksmbd: not allow guest user on multichannel

Published Aug 16, 2025
·
Updated

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: not allow guest user on multichannel

This patch return STATUSNOTSUPPORTED if binding session is guest.

Affected Software

5 affected components
Linux Kernel
Linux Linux kernel>=5.15<5.15.112
Linux Linux kernel>=5.16<6.1.28
Linux Linux kernel>=6.2<6.2.15
Linux Linux kernel>=6.3<6.3.2

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Configuration

    Update ksmbd behavior to reject guest binding sessions by returning STATUS_NOT_SUPPORTED (ksmbd: do not allow guest user on multichannel).

    ksmbd (Linux kernel) binding session guest handling = Return STATUS_NOT_SUPPORTED when binding session is guest

Event History

Aug 16, 2025
CVE Published
via MITRE·01:25 PM
Data Sourced
via MITRE·01:25 PM
DescriptionSeverity
Data Sourced
via NVD·02:15 PM
RemedyDescriptionSeverityAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2023-32249?

The severity of CVE-2023-32249 is classified as moderate.

2

How do I fix CVE-2023-32249?

To fix CVE-2023-32249, update the Linux kernel to the latest version where this vulnerability has been addressed.

3

What are the potential impacts of CVE-2023-32249?

The potential impacts of CVE-2023-32249 include unauthorized guest access to multichannel sessions.

4

Which versions of the Linux kernel are affected by CVE-2023-32249?

CVE-2023-32249 affects specific versions of the Linux kernel prior to the patch release.

5

Is CVE-2023-32249 a remote code execution vulnerability?

CVE-2023-32249 is not a remote code execution vulnerability but relates to session binding issues for guest users.

Contact

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