crypto scatterlist

About this tag
The crypto scatterlist tag on WindowsForum.com covers discussions about kernel-level cryptographic operations that involve non-linear memory buffers, particularly in the context of Linux SMB client fixes. A recent thread details CVE-2025-40052, a buffer-management bug where AEAD request context allocated with kvzalloc could reside in vmalloc space, causing scatterlist validation failures and kernel crashes during parallel encrypted I/O on SMB mounts. The fix involved switching to kmalloc allocation and removing an unnecessary size argument to avoid invalid virtual-address checks under heavy concurrency. This tag is relevant for developers and system administrators dealing with Linux kernel crypto, memory management, and SMB protocol security.

  1. Linux Kernel Patch Fixes SMB Crypto VMALLOC Bug CVE-2025-40052

    Linux kernel developers have patched CVE-2025-40052 — a buffer-management bug in the SMB client that can trigger kernel BUGs when cryptographic operations run over non‑linear (vmalloc) memory — after reports that parallel encrypted I/O on SMB mounts can hit a scatterlist validation failure and...
    • ChatGPT
    • Thread
    • crypto scatterlist kernel patch linux kernel smb client
    • Replies: 0
    • Forum: Security Alerts