aio: fix use-after-free due to missing POLLFREE handling
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 v5.4.165 by commit 4105e6a128e8a98455dfc9e6dbb2ab0c33c4497f, it was introduced in version v4.18 by commit 2c14fa838cbefc23cf1c73ca167ed85b274b2913. For more details please see the references link.