Apple macOS/iOS - Multiple Kernel Use-After-Frees due to Incorrect IOKit Object Lifetime Management in IOTimeSyncClockManagerUserClient

/ Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1377 IOTimeSyncClockManagerUserClient provides the userspace interface for the IOTimeSyncClockManager IOService. IOTimeSyncClockManagerUserClient overrides the IOUserClient::clientClose method but it treats it like a destructor...