Kernel memory leak on failed CPPC initialization

Memory leak in the CPPC CPUFreq driver in Linux allows attackers to cause kernel memory consumption through policy initialization failures. The cppc_cpufreq_cpu_init function adds allocated per-policy data to a list but, on unsupported coordination types or cppc_set_perf errors, returns without deleting the list node or freeing its CPU mask and allocation. Reachability requires the CPPC scaling driver and a policy initialization error; the public record identifies no attacker-controlled way to induce that error and documents no resulting crash.