sysfs device lifetime

The sysfs device lifetime tag covers Linux kernel issues where a device's sysfs representation outlives its parent, leading to dangling links and potential use-after-free scenarios. A notable example is CVE-2026-31723, a medium-severity flaw in the USB gadget f_subset driver where a network device can persist beyond its sysfs parent during bind/unbind cycles. This type of bug primarily affects embedded systems, developer boards, and Linux-based infrastructure rather than typical Windows desktop users. The tag focuses on kernel hygiene problems related to device lifecycle management in sysfs, particularly in scenarios involving USB gadget drivers and virtual hardware impersonation.