After years of debate and development, bcachefs—a modern copy-on-write filesystem once merged into the Linux kernel—is being removed from mainline. As of kernel 6.17, the in-kernel implementation has ...

The Linux kernel, foundational for servers, desktops, embedded systems, and cloud infrastructure, has been under heightened scrutiny. Several vulnerabilities have been exploited in real-world attacks, ...

The operating system mode. Processors operate either in kernel mode or "user mode." Also called "supervisor mode," the kernel mode enables the OS (kernel) to execute "privileged instructions," which ...

A kernel extension (kext) adds functionality to a macOS operating system (OS). The kernel is the heart of the OS, and extensions may add security or functions required to run in revised hardware, such ...