A race condition was addressed with improved state handling. This issue is fixed in iOS 13.5 and iPadOS 13.5, macOS Catalina 10.15.5, tvOS 13.4.5, watchOS 6.2.5. An application may be able to gain elevated privileges.
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/HT211168 | vendor advisory |
https://support.apple.com/HT211170 | vendor advisory |
https://support.apple.com/HT211171 | vendor advisory |
https://support.apple.com/HT211175 | vendor advisory |