sysfs lifecycle bug

About this tag
The sysfs lifecycle bug tag covers a Linux kernel vulnerability (CVE-2026-31722) where repeated bind and unbind cycles in the USB gadget RNDIS function can leave a network device attached to a destroyed sysfs parent, causing a crash. This bug is Windows-adjacent because RNDIS originated from Windows USB networking models. The tag is relevant for administrators, embedded developers, and anyone shipping Linux-powered devices that rely on RNDIS compatibility. Discussions focus on the security implications, mitigation strategies, and the broader pattern of legacy compatibility contracts introducing modern kernel security issues.

  1. CVE-2026-31722 Linux RNDIS USB Gadget Bug: Crash Risk & Mitigation Guide

    CVE-2026-31722 is a medium-severity Linux kernel vulnerability published by NVD on May 1, 2026, affecting the USB gadget RNDIS function, where repeated bind and unbind cycles can leave a surviving network device attached to a destroyed sysfs parent and crash availability. The bug is not a...
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    • availability vulnerability linux kernel security sysfs lifecycle bug usb gadget rndis
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    • Forum: Security Alerts