Infinite Loop Vulnerability in Linux Kernel ksmbd Component
CVE-2026-23220

Currently unrated

Key Information:

Vendor: Linux
Status: Linux
Vendor: CVE Published:; 18 February 2026

What is CVE-2026-23220?

A vulnerability in the Linux kernel’s ksmbd component can cause an infinite loop due to improper handling of signed SMB2 request failures. When the smb2 signature verification fails, it incorrectly resets critical pointers, leading to continued processing of the same request, resulting in excessive log flooding and heightened CPU utilization. A patch has been released to correct this behavior, ensuring the processing loop terminates as expected rather than progressing from an invalidated command offset.

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