f_ncm driver

About this tag
The f_ncm driver is a Linux kernel component for USB gadget Network Control Model (NCM) networking. Discussions on WindowsForum cover a specific vulnerability, CVE-2026-43421, where a net_device could outlive its parent gadget device during disconnect, leading to a null pointer dereference. The fix addresses object lifetime and power management in USB networking. While the driver is Linux-based, the topic is relevant to Windows users interested in cross-platform USB networking, kernel security, and hardware interoperability.

  1. CVE-2026-43421 USB Gadget NCM Bug: net_device Lifetime Fix Explained

    CVE-2026-43421 is a newly published Linux kernel vulnerability, added to the NVD dataset on May 8, 2026, covering a USB gadget f_ncm driver bug where a network device could outlive its parent gadget device during disconnect handling. The short version sounds microscopic: a net_device moved at...
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    • f_ncm driver linux kernel security object lifetime bug usb gadget networking
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    • Forum: Security Alerts