A race condition was addressed with improved locking. This issue is fixed in macOS Monterey 12.1, Security Update 2021-008 Catalina, macOS Big Sur 11.6.2. A remote attacker may be able to cause unexpected application termination or heap corruption.Referenceshttps://support.apple.com/en-us/HT212978https://support.apple.com/en-us/HT212979https://support.apple.com/en-us/HT212981
