brcmsmac wi-fi driver

About this tag
The brcmsmac Wi-Fi driver is a Linux kernel module for Broadcom wireless chipsets. A recent security advisory, CVE-2026-31661, highlights a coherent DMA size mismatch in this driver that could lead to a system crash or memory corruption. With a CVSS score of 5.5 Medium, the flaw is a local availability risk for systems using the affected driver. This is a Linux-specific issue and does not impact Windows Wi-Fi stacks. Users should apply kernel patches from their Linux distribution to mitigate the vulnerability. The tag covers discussions around this driver's security, patching, and its role in Linux wireless networking.

  1. CVE-2026-31661: brcmsmac Coherent DMA Size Mismatch in Linux Kernel (Patch Guide)

    CVE-2026-31661 is a reminder that kernel security is often decided by small accounting details, not cinematic remote exploits. The newly cataloged Linux kernel flaw affects the brcmsmac Broadcom Wi-Fi driver and centers on a mismatch between the size used for coherent DMA allocation and the size...
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    • Forum: Security Alerts