Here is some resources about macOS/iOS system security.
https://bugs.chromium.org/p/project-zero/issues/list
https://talosintelligence.com/vulnerability_reports#disclosed
iOS/MacOS Kernelcache/Extensions analysis tool:
https://github.com/lilang-wu/p-joker
macOS 10.13 kernel fuzzer using multiple different methods:
https://github.com/FSecureLABS/OSXFuzz
static analysis tool for analyzing the security of Apple kernel drivers:
https://github.com/alibaba-edu/Driver-Security-Analyzer
a framework is for fuzzing OSX kernel vulnerability based on passive inline hook mechanism in kernel mode:
https://github.com/SilverMoonSecurity/PassiveFuzzFrameworkOSX
attack kernel graphics driver:
Attacking the macOS Kernel Graphics Driver
Don't Trust Your Eye: Apple Graphics Is Compromised!
LLDBFuzzer:
Debug for Bug: Crack and Hack Apple Core by Itself
LynxFuzzer:
Improving Mac OS X Security Through Gray Box Fuzzing Technique
Port Syzkaller to Support macOS XNU Fuzzing:
Drill Apple Core: Up and Down - Fuzz Apple Core Component in Kernel and User Mode for Fun and Profit