xtensa

About this tag
The Xtensa tag on WindowsForum.com covers discussions related to the Xtensa architecture, particularly in the context of Linux kernel security. Recent content includes a thread about CVE-2025-40193, a vulnerability in the Xtensa simdisk procfs handler that could allow local attackers to cause a kernel crash via malformed input. The fix involves adding input size validation to prevent exploitation. While the tag is not directly about Windows, it may interest users involved in cross-platform development, embedded systems, or kernel security research.

  1. Linux Kernel CVE-2025-40193 Harden simdisk procfs input size to prevent crash

    A small, defensive change landed in the upstream Linux kernel to address CVE‑2025‑40193 — a local input‑validation bug in the Xtensa simdisk procfs handler that could let an attacker supply an arbitrarily large size to memdup_user_nul and trigger a kernel crash — the fix adds an explicit input...