A use after free issue was addressed with improved memory management. This issue is fixed in tvOS 15.5, iOS 15.5 and iPadOS 15.5, Security Update 2022-004 Catalina, watchOS 8.6, macOS Big Sur 11.6.6, macOS Monterey 12.4. An application may be able to execute arbitrary code with kernel privileges.
https://support.apple.com/en-us/HT213256
https://support.apple.com/en-us/102770
https://support.apple.com/en-us/HT213258
https://support.apple.com/en-us/HT213257
https://support.apple.com/en-us/HT213255
https://support.apple.com/en-us/HT213254
https://support.apple.com/en-us/HT213253
http://packetstormsecurity.com/files/167517/XNU-Flow-Divert-Race-Condition-Use-After-Free.html