object lifetime bug

The object lifetime bug tag on WindowsForum covers discussions about software defects where an object, such as a network device, outlives its parent or expected lifespan, leading to null pointer dereferences or use-after-free errors. A key example is CVE-2026-43421, a Linux kernel vulnerability in the USB gadget f_ncm driver where a net_device could persist after its parent gadget device was removed during disconnect handling. This caused a sysfs link to point to freed memory. The tag explores how fixes for such crashes often involve broader design considerations around object lifetime management, power management, and USB networking. While the example is Linux-specific, the underlying concepts of object lifetime bugs are relevant to Windows and cross-platform development.