What is the vulnerability ID for this Linux Kernel vulnerability?

The vulnerability ID for this Linux Kernel vulnerability is ZDI-CAN-20481.

What is the severity of ZDI-CAN-20481?

ZDI-CAN-20481 has a severity rating of critical with a value of 9.

Is authentication required to exploit ZDI-CAN-20481?

No, authentication is not required to exploit ZDI-CAN-20481.

Which systems are vulnerable to ZDI-CAN-20481?

Only systems with ksmbd enabled are vulnerable to ZDI-CAN-20481.

Vulnerability/
ZDI-CAN-20481

critical

17/5/2023

26/2/2025

ZDI-CAN-20481: ZDI-23-698: Linux Kernel ksmbd Session Race Condition Remote Code Execution Vulnerability

First published: Wed May 17 2023(Updated: )

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Linux Kernel. Authentication is not required to exploit this vulnerability, but only systems with ksmbd enabled are vulnerable. The specific flaw exists within the processing of SMB2_SESSION_SETUP commands. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to execute code in the context of the kernel.

Affected Software	Affected Version	How to fix
Red Hat Kernel-devel

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Frequently Asked Questions

What is the vulnerability ID for this Linux Kernel vulnerability?
The vulnerability ID for this Linux Kernel vulnerability is ZDI-CAN-20481.
What is the severity of ZDI-CAN-20481?
ZDI-CAN-20481 has a severity rating of critical with a value of 9.
How does the vulnerability in ZDI-CAN-20481 allow remote code execution?
The vulnerability in ZDI-CAN-20481 allows remote attackers to execute arbitrary code on affected installations of Linux Kernel.
Is authentication required to exploit ZDI-CAN-20481?
No, authentication is not required to exploit ZDI-CAN-20481.
Which systems are vulnerable to ZDI-CAN-20481?
Only systems with ksmbd enabled are vulnerable to ZDI-CAN-20481.

collector/zdi-published
alias/ZDI-CAN-20481
agent/last-modified-date
agent/first-publish-date
agent/severity
agent/references
agent/description
agent/source
agent/type
agent/title
agent/tags
agent/softwarecombine
agent/event
collector/zdi-advisory
source/ZDI
alias/ZDI-23-698
alias/CVE-2023-32250
agent/software-canonical-lookup
agent/software-canonical-lookup-request
vendor/linux
canonical/red hat kernel-devel

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