A KEXT, an abbreviation for Kernel Extension, refers to a type of software module specifically designed for use in macOS operating systems. It serves as an integral part of the Mac's kernel, acting as an extension to its functionalities and enabling system-level communication between software and hardware components.
KEXTs play a vital role in macOS systems by adding functionality, enhancing performance, and enabling the integration of various peripherals, drivers, or firmware required by third-party software or hardware. These modules are loaded into the kernel during system startup and can interact directly with the operating system's core.
KEXTs are primarily used to establish communication and facilitate interaction between the macOS kernel and certain hardware devices, such as printers, scanners, audio interfaces, or graphics cards. They enable the operating system to recognize and utilize these peripherals efficiently, ensuring smooth operation and compatibility.
Developers often create KEXTs to provide device support, add new features, or address compatibility issues in macOS. However, due to their extensive privileges and direct access to system resources, KEXTs can pose security risks if they are poorly designed or maliciously exploited. Consequently, Apple has implemented strict guidelines and security measures to ensure the safe deployment and usage of KEXTs within their operating systems.
