CVE-2026-19669 Unbounded variable-length array in fuel gauge syscall verifiers allows kernel stack overflow from user mode

The user-mode syscall verifiers zvrfyfuelgaugegetprops and zvrfyfuelgaugesetprops in drivers/fuelgauge/fuelgaugesyscallhandlers.c declared two variable-length arrays, union fuelgaugepropval kvalslen and fuelgaugepropt kpropslen, sized directly by the caller-supplied len argument. len is an...