Performance reasons vendors want in-kernel SMB

We pull on a few loose threads from recent episodes, and some of them unravel into way more than we expected.

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• CVE-2025-40090 | Ubuntu — Since commit 305853cce3794 ksmbd_session_rpc_method() attempts to lock sess->rpc_lock. This causes hung connections / tasks when a client attempts to open a named pipe.
• SMB3 & KSMBD See Performance Improvements With Linux 6.18 — KSMBD also now adds a max IP connections parameter to optionally limit the maximum number of connections permitted per IP address.
• ksmbd vulnerability research · Doyensec's Blog
• ksmbd - Fuzzing Improvements and Vulnerability Discovery (2/3)
• ksmbd - Exploiting CVE-2025-37947 (3/3)
• doyensec's KSMBD-CVE-2025-37947 PoC
• GrapheneOS bails on OVHcloud over France's privacy stance
• GrapheneOS exits France — what it means for encryption
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• Seems like the GrapheneOS phone collab may be with Motorolla.
• Rust For Linux Kernel Co-Maintainer Formally Steps Down
• Bcachefs Ousted from Mainline Kernel: The Move to DKMS and What It Means
• Red Hat Introduces Project Hummingbird for “Zero-CVE” Strategies
• Richard Hipp - Git: Just Say No - YouTube
• 2011 SouthEast LinuxFest - Richard Hipp - Fossilize Your Code - YouTube
• Pick: Gopher64 — Highly compatible N64 emulator.
• Gopher64 — simple64's official and spiritual successor - Libretro — It’s made by the same developer(s). Unlike simple64 however, it’s not based entirely on Mupen64Plus. And it’s aiming for a more LowSpec hardware overhang.
• Install Gopher64 on Linux | Flathub