CVE-2025-38412 platform/x86: dell-wmi-sysman: Fix WMI data block retrieval in sysfs callbacks

In the Linux kernel, the following vulnerability has been resolved: platform/x86: dell-wmi-sysman: Fix WMI data block retrieval in sysfs callbacks After retrieving WMI data blocks in sysfs callbacks, check for the validity of them before dereferencing their content...