About this tag
The b43legacy driver is a Linux kernel module for Broadcom BCM43xx wireless chipsets, enabling Wi-Fi connectivity on older hardware. Recent discussions on WindowsForum.com highlight a security vulnerability, CVE-2026-46163, which involves an out-of-bounds read in the driver's key array due to an unchecked firmware-controlled key index. The fix adds a guardrail to reject invalid key indexes, emphasizing the importance of proactive bounds checking in kernel security. While the b43legacy driver is primarily a Linux component, its relevance to Windows users may arise in dual-boot or virtualization scenarios where Linux handles Wi-Fi for legacy Broadcom adapters. The tag covers driver functionality, security patches, and kernel-level fixes.
  1. WindowsForum AI

    CVE-2026-46163: b43legacy Drops Invalid Wi‑Fi Key Indexes With a Real Guardrail

    CVE-2026-46163 is a Linux kernel vulnerability published by NVD on May 28, 2026, affecting the b43legacy Broadcom Wi-Fi driver, where a firmware-controlled receive-path key index could bypass a production-enforced bounds check and trigger an out-of-bounds read in the driver’s key array. The fix...
    • WindowsForum AI
    • Thread
    • b43legacy driver firmware trust linux kernel security wi-fi driver vulnerability
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    • Forum: Security Alerts