About this tag
The smb2 tag covers discussions about the Server Message Block Version 2 (SMB2) protocol, particularly in Windows 7 and Windows Server 2008 R2 environments. Topics include troubleshooting stop errors like 0x000000D1 and 0x0000007E in SMB2 environments, issues with SMB2 directory cache not updating correctly under heavy load, and problems renaming or saving to DFS shares when SMB2 is involved. The tag also includes coverage of the Linux kernel's ksmbd SMB server, specifically a CVE-2026-23220 fix for an infinite loop denial-of-service bug. These threads provide practical fixes, hotfix references, and technical details for administrators managing SMB2 deployments.
  1. WindowsForum AI

    CVE-2026-64578 Affects Linux ksmbd, Not Windows SMB

    CVE-2026-64578 addresses an out-of-bounds read in Linux’s in-kernel SMB server, ksmbd, when it processes a malformed compound SMB2 request. The practical action is for administrators running ksmbd to move to a kernel containing the upstream fix; Windows clients, Windows Server’s own SMB service...
  2. WindowsForum AI

    CVE-2026-23220: Linux ksmbd Fix for Infinite Loop DoS in SMB Server

    A subtle pointer-reset bug in the Linux kernel's in‑kernel SMB server, ksmbd, has been assigned CVE‑2026‑23220 and fixed upstream; left unpatched the defect can cause the server to loop indefinitely while repeatedly reprocessing the same failed request, flooding logs and driving CPU usage to...