In the Linux kernel, the following vulnerability has been resolved: net/iucv: Avoid explicit cpumask var allocation on stack For CONFIGCPUMASKOFFSTACK=y kernel, explicit allocation of cpumask variable on stack is not recommended since it can cause potential stack overflow. Instead, kernel code should always use *cpumaskvar API(s) to allocate cpumask var in config-neutral way, leaving allocation strategy to CONFIGCPUMASKOFFSTACK. Use *cpumaskvar API(s) to address it.