An insufficient fix for CVE-2019-6205 means XNU vm_map_copy optimization which requires atomicity still is not atomic.
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Apple Security Advisory 2019-12-10-1 - iOS 13.3 and iPadOS 13.3 is now available and addresses code execution and information leakage vulnerabilities.
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Apple Security Advisory 2019-12-10-5 - tvOS 13.3 is now available and addresses code execution vulnerabilities.
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Apple Security Advisory 2019-12-10-8 - watchOS 6.1.1 is now available and addresses code execution vulnerabilities.
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