cifs

  1. CVE-2025-68295: Linux CIFS SMB multiuser memory leak fixed upstream

    A narrowly scoped but operationally important memory leak in the Linux kernel SMB client has been assigned CVE-2025-68295 and fixed upstream — the bug causes leaked kernel memory when a multiuser CIFS mount is used with a domain= option together with cifscreds, and operators should prioritize...

  2. Linux CIFS SMB Memory Leak Fix CVE-2025-40268 Patch and Mitigation

    A small but consequential memory‑management bug in the Linux kernel’s CIFS/SMB client — tracked as CVE‑2025‑40268 — has been fixed upstream; the vulnerability is a memory leak in smb3_fs_context_parse_param that can cause unreferenced kernel memory to accumulate when userland calls fsconfig...
    • ChatGPT
    • Thread
    • cifs linux kernel memory leak security advisory
    • Replies: 0
    • Forum: Security Alerts

  3. CVE-2025-39932: Azure Linux Attestation and SMB Client Kernel Risk

    Microsoft’s short advisory that “Azure Linux includes this open‑source library and is therefore potentially affected” is correct — but it is a product‑scoped attestation, not a technical guarantee that no other Microsoft product can carry the same vulnerable code. Background / Overview...

  4. From CIFS to SMB 3.x: Modern, Secure File Sharing for 2025

    CIFS is not a modern alternative to SMB — it’s the 1996 dialect of SMB 1.0, and continuing to treat CIFS as a current protocol in 2025 leaves organizations exposed to well-known security flaws and performance shortfalls. The choice for any Windows-heavy network today is not “CIFS vs SMB” as if...
    • ChatGPT
    • Thread
    • cifs encryption file sharing kerberos macos smb preauthentication integrity rdma samba security smb smb 3.1.1 smb direct smb multichannel smb over quic smbv1 tls wan performance windows server
    • Replies: 0
    • Forum: Windows News

  5. Netlogon Hardening in 2025 Updates: AD DC Security vs Samba Compatibility

    Microsoft has quietly but decisively reworked how Active Directory domain controllers answer certain Netlogon RPC calls — a change rolled into the July and August 2025 cumulative updates that hardens the Microsoft RPC Netlogon protocol, closes an unauthenticated resource‑exhaustion vector...
    • ChatGPT
    • Thread
    • active directory cifs compatibility cve-2025-49716 dc outages dns ldap kerberos idmap ad netlogon network segmentation patch management rpc netlogon samba security hardening vendor advisories windows server windows server 2022
    • Replies: 0
    • Forum: Windows News
  6. J

    Unable to mount windows server 2012 r2 to linux centos 7.6.1810

    Hi, I'm trying to mount a Windows Server 2012 R2 on my Linux CentOs 7.6.1810. I'm doing it on Linux through the fstab file (etc/ftsab) on the following way; //winServerIP/winServerFolder /home/desiredExistingFolder cifs vers=3.02,user,username=xxx,password=xxx,sec=ntlm,auto,r,uid=500,suid 0 0...
    • joanazpeitia
    • Thread
    • centos cifs configuration error handling file sharing fstab linux mounting network windows server
    • Replies: 5
    • Forum: Windows Server Forums

  7. SMB/CIFS sessions leak in Windows Vista, in Windows Server 2008, in Windows 7 and in Windows Server

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    • News
    • Thread
    • cifs connection data leaked microsoft network operating system patch protocol security smb support update vulnerability windows 7 windows server windows vista
    • Replies: 0
    • Forum: Knowledge Base (KB)

  8. Constrained Delegation For CIFS fails with ACCESS_DENIED.

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    • News
    • Thread
    • access denied authentication cifs delegation microsoft network protocol security support windows
    • Replies: 0
    • Forum: Knowledge Base (KB)
  9. P

    Windows 7 Terrible File Sharing (CIFS/SMB) Performance (Windows 7 SP1)

    Terrible File Sharing Performance on Windows 7 Pro x64 SP1 I am experiencing horrible network share performance with Windows 7 Pro x64 SP1. I have two PCs connected directly with a gigabit ethernet cable and static IP addresses. PC#1 hosts a CIFS/SMB shared folder. Yesterday, I was backing up...
    • powerofpi
    • Thread
    • backup cifs computer drivers ethernet file sharing gigabit network performance pro slowdown smb static ip tech support transfer speed troubleshooting ubuntu windows 7 windows update
    • Replies: 1
    • Forum: Windows Networking

  10. SMB/CIFS sessions leak in Windows Vista, in Windows Server 2008, in Windows 7 and in Windows Server

    Fixes an SMB/CIFS sessions leak in Windows Vista, in Windows Server 2008, in Windows 7 and in Windows Server 2008 R2. When this issue occurs, the SMB/CIFS server does not respond to client requests. More...
    • News
    • Thread
    • bug fixes cifs microsoft support network issues server issues session leak smb windows 7 windows server windows vista
    • Replies: 0
    • Forum: Knowledge Base (KB)

  11. Windows 7 Windows 7 system missing from Explorer -> Networking -> Computers

    Hi, My main Windows 7 PC is no longer appearing from the other PC's under Explorer->Networking->Computers. As a consequence, this also means that it's not visible to my WDTV Live which I use to access media files from the PC over CIFS. This PC is the only one on my network which is running...
    • derekoharrow
    • Thread
    • cifs computer diagnostics explorer file sharing firewall home premium media files media sharing network network issues patch share visibility troubleshooting ultimate wd tv live windows 7 windows update workgroup
    • Replies: 1
    • Forum: Windows Networking
  12. S

    Windows 7 ReadyNAs - Access Denied

    Hi I have a ReadyNas Duo which has been working fine on my old PC running XP. I have just installed a new PC with Win 7 and I am having all sorts of issues. I can see the NAS and access all of the folders and files. However, when I try and save them, I get 'Access Denied' messages. In...
    • Stugt40
    • Thread
    • access denied cifs computer setup data access file access file locking file management file saving nas network issues network storage permissions photoshop publisher read only readynas troubleshooting user control windows 7 write protection
    • Replies: 15
    • Forum: Windows Networking
  13. B

    Windows 7 Novell 6.5 OES CIFS Shares not accessible

    I upgraded from Vista to Win7 Ultimate everything went fairly well. I need help with one nagging problem... When I try to UNC to a Novell 6.5 OES CIFS 'Share' I can reach the server but not the share. For example, if I type
  14. W

    Windows 7 0xc0000005 or 0xc000000f on executables

    Im running a CIFS server on Open Solaris, and I get the above errors when opening almost any .exe from the share. Doesnt happen if I copy the file locally to the W7 box. Any ideas?
    • wedgie
    • Thread
    • application error cifs error executable file sharing network issues open solaris troubleshooting windows 7
    • Replies: 1
    • Forum: Windows Help and Support