A memory corruption issue was addressed with improved memory handling. This issue is fixed in macOS Monterey 12.2. A malicious application may be able to execute arbitrary code with kernel privileges.

A use after free issue was addressed with improved memory management. This issue is fixed in iOS 15.3 and iPadOS 15.3, watchOS 8.4, tvOS 15.3, Safari 15.3, macOS Monterey 12.2. Processing maliciously crafted web content may lead to arbitrary code execution.

A validation issue was addressed with improved input sanitization. This issue is fixed in iOS 15.3 and iPadOS 15.3, watchOS 8.4, tvOS 15.3, Safari 15.3, macOS Monterey 12.2. Processing a maliciously crafted mail message may lead to running arbitrary javascript.

A resource exhaustion issue was addressed with improved input validation. This issue is fixed in iOS 15.2.1 and iPadOS 15.2.1. Processing a maliciously crafted HomeKit accessory name may cause a denial of service.

A memory corruption issue was addressed with improved input validation. This issue is fixed in iOS 15.3 and iPadOS 15.3, macOS Big Sur 11.6.3, macOS Monterey 12.2. A malicious application may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited..

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Monterey 12.2. A malicious application may be able to execute arbitrary code with kernel privileges.