About the security content of Security Update 2021-006 Catalina

This document describes the security content of Security Update 2021-006 Catalina.

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Security Update 2021-006 Catalina

Released September 23, 2021

XNU

Available for: macOS Catalina

Impact: A malicious application may be able to execute arbitrary code with kernel privileges. Apple is aware of reports that an exploit for this issue exists in the wild.

Description: A type confusion issue was addressed with improved state handling.

CVE-2021-30869: Erye Hernandez of Google Threat Analysis Group, Clément Lecigne of Google Threat Analysis Group, and Ian Beer of Google Project Zero

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Published Date: November 03, 2023