devres lifetime

The devres lifetime tag covers discussions about device-managed resource lifetime bookkeeping in the Linux kernel, particularly as it relates to security vulnerabilities. A prominent example is CVE-2026-46103 in the ucan USB CAN driver, where a control message buffer was incorrectly tied to the parent USB device instead of the bound USB interface. The fix involved changing a single device pointer in an allocation call, highlighting how kernel security increasingly depends on correct resource lifetime management rather than complex exploit chains. This tag is relevant for developers and system administrators working with Linux kernel drivers, USB devices, and embedded systems where devres lifetime tracking is critical for stability and security.