A memory corruption issue existed in the processing of ICC profiles. This issue was addressed with improved input validation. This issue is fixed in iOS 15.1 and iPadOS 15.1, macOS Monterey 12.0.1, iOS 14.8.1 and iPadOS 14.8.1, tvOS 15.1, watchOS 8.1, Security Update 2021-007 Catalina, macOS Big Sur 11.6.1. Processing a maliciously crafted image may lead to arbitrary code execution.
https://support.apple.com/en-us/HT212876
https://support.apple.com/en-us/HT212874
https://support.apple.com/en-us/HT212872
https://support.apple.com/en-us/HT212871
https://support.apple.com/en-us/HT212869
https://support.apple.com/en-us/HT212868