The XNU function IOUserClient::_sendAsyncResult64() discloses the address of the ipc_port to which the notification is sent in the Mach message enqueued on the notification port.
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Apple Security Advisory 2020-1-28-1 - iOS 13.3.1 and iPadOS 13.3.1 are now available and address code execution vulnerabilities.
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Apple Security Advisory 2020-1-28-2 - macOS Catalina 10.15.3, Security Update 2020-001 Mojave, and Security Update 2020-001 High Sierra are now available and address buffer overflow, bypass, and code execution vulnerabilities.
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Apple Security Advisory 2020-1-28-4 - tvOS 13.3.1 is now available and addresses code execution vulnerabilities.
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Apple Security Advisory 2020-1-28-3 - watchOS 6.1.2 is now available and addresses code execution vulnerabilities.
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