A race condition was addressed with improved state handling. This issue is fixed in tvOS 15.6, watchOS 8.7, iOS 15.6 and iPadOS 15.6. An app with arbitrary kernel read and write capability may be able to bypass Pointer Authentication.
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
Link | Tags |
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https://support.apple.com/en-us/HT213340 | vendor advisory |
https://support.apple.com/en-us/HT213342 | vendor advisory |
https://support.apple.com/en-us/HT213346 | vendor advisory |