Linux Kernel 6.15 Now Available
The latest Linux kernel is now available with several new features/improvements and the usual bug fixes.
Linus Torvalds announced the release of Linux kernel 6.15 on May 25, 2025. This latest release includes some pretty important Rust integration, by way of the Direct Rendering Manager (DRM) driver, named NOVA.
Written in Rust, NOVA gives the kernel significant gains on exFAT performance and a new fanotify API for enabling real-time monitoring of filesystem mount and unmount events (to make it possible for applications to instantly respond to changes). It was created for the NVIDIA RTX 2000 "Turing" series and other new GPUs.
Btrfs benefits from the new kernel with real-time zstd compression levels (-15 to -1) to improve speed while maintaining compression ratios and add smarter fallback for direct I/O with checksums (to reduce errors in virtual environments).
There's also a new zero-copy receive (zcrx) via io_uring that allows network packet data to move directly into userspace RAM. As well, there's a new TCP socket option for finer control over IPv4 retry timeouts.
You'll also find more hardware expansion, such as dedicated drivers for the Apple Touch Bar; a new Samsung Galaxy Book driver for ACPI platform profiles, battery management, and function keys; broader support for Apple M1 and NVIDIA GPUs; and more.
To find out more about the latest kernel, you can read Linus' official announcement.
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