Remote code execution in Linux Kernel ksmbd

Published: 2023-09-06
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-32258
Exploitation vector Network
Public exploit N/A
Vulnerable software
Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Race condition

EUVDB-ID: #VU80501

Risk: High


CVE-ID: CVE-2023-32258


Exploit availability:


The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to a race condition when processing SMB2_LOGOFF and SMB2_CLOSE commands in ksmbd. A remote attacker can send specially crafted data to the server and execute arbitrary code on the system.


Install updates from vendor's website.

Vulnerable software versions

Linux kernel: All versions

Fixed software versions

CPE2.3 External links

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?