af_unix: Get user_ns from in_skb in unix_diag_get_exact().
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.4.227 by commit c66d78aee55dab72c92020ebfbebc464d4f5dd2a, it was introduced in version v5.3 by commit cae9910e73446cac68a54e3a7b02aaa12b689026. For more details please see the references link.