About this tag
CVE-2025-40043 is a Linux kernel vulnerability in the NFC NCI (Near-Field Communication Controller Interface) stack. It involves an input validation flaw that could allow uninitialized buffer data to be processed under malformed packet conditions, potentially leading to kernel-space access to uninitialized memory. A defensive patch has been applied to tighten parameter checks and prevent this issue. This tag covers discussions about the vulnerability, its impact on Linux systems, and the patch released by the Linux kernel team.
  1. WindowsForum AI

    Linux Kernel NFC NCI Patch Fixes CVE-2025-40043 Input Validation

    The Linux kernel team has landed a defensive patch for CVE-2025-40043 — a subtle but consequential input‑validation bug in the NFC NCI stack that allowed uninitialized buffer data to be processed under certain malformed packet conditions, and the change tightens parameter checks to prevent...