CVE-2025-68177 cpufreq/longhaul: handle NULL policy in longhaul_exit

In the Linux kernel, the following vulnerability has been resolved: cpufreq/longhaul: handle NULL policy in longhaulexit longhaulexit was calling cpufreqcpuget0 without checking for a NULL policy pointer. On some systems, this could lead to a NULL dereference and a kernel warning or panic. This...