kfence: fix memory leak when cat kfence objects
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 v5.15.12 by commit 2f06c8293d27f6337f907042c602c9c953988c48, it was introduced in version v5.12 by commit 0ce20dd840897b12ae70869c69f1ba34d6d16965. For more details please see the references link.