Linux 6.15 is out, with deep Rust integration and Bcachefs stabilization

Major New Features in Linux 6.15: A Leap Forward in Stability and Performance

Since its official release in 2025, Linux 6.15 has established itself as a key milestone in the evolution of open source distributions. This release consolidates the ecosystem around several strategic areas: improved hardware support, greater integration of Rust, and enhanced stability of the Bcachefs file system. Among its strengths, compatibility with modern architectures such as those used by Red Hat, Debian, Ubuntu, Fedora, Arch Linux, and SUSE, reinforces its position as a benchmark for server environments, development, and even for highly demanding users. The rise of Rust in the kernel also opens new perspectives for code security and stability, in line with the 2025 security guidelines.

Deep integration of Rust in Linux 6.15: a new era of security

For several years, Rust has established itself as a sustainable alternative to C/C++ for systems programming. By officially integrating Rust into Linux 6.15, Linus Torvalds and his collaborators are paving the way for more secure and less error-prone management. The addition of this language notably strengthens the kernel’s resilience to memory-related vulnerabilities, a long-standing problem in the open source world.

Kernel modernization efforts have resulted in the incorporation of Rust into several of its critical modules, notably for timer management, inter-kernel communication, and device manipulation. The Linux community has thus seen a direct impact on kernel robustness for major distributions, such as Fedora and Arch Linux, which quickly experimented with these changes. The increased stability of the Bcachefs file system, stabilized in this release, is also facilitated by this technological evolution. Key Elements of Rust in Linux 6.15

The Bcachefs filesystem has quickly established itself as one of the most innovative and powerful solutions in the Linux landscape. Version 6.15 marks its official stabilization, making it a credible choice for hosting mission-critical servers or sophisticated workstations. The maturation of Bcachefs represents a major step forward in the open source ecosystem, particularly for its ability to manage large volumes of data while maintaining access speed and robustness.

Key features that led to this stabilization include improved logging management, reduced corruption risks in the event of an outage, and increased compatibility with existing systems. Extensive testing under various Linux distributions such as Ubuntu, Debian, and Fedora has certified its performance and reliability. Compatibility with solutions such as Kali Linux for security or SUSE for enterprise environments will undoubtedly pave the way for wider adoption. Improved journaling management

Reduced corruption during power outages

1. Optimized performance for large volumes
2. Compatibility with various file systems
3. Ease of integration with other open source tools
4. Key features of Bcachefs in Linux 6.15
5. User benefits

The latest kernel version offers a significant number of hardware compatibility improvements. Distributors such as Red Hat, Ubuntu, Fedora, and SUSE now benefit from more in-depth support for advanced architectures such as those using Intel Arrow Lake or AMD Ryzen 7000 processors. These additions provide users with improved stability and optimized performance, particularly in high-end server or workstation environments.

Compatibility with the latest GPUs, including new drivers for NVIDIA and AMD

Optimizations for multi-core processors and power management

• Support for fast NVMe and SSD storage interfaces
• Improved support for advanced networking components, including 5G and Gigabit Ethernet
• These improvements facilitate migration to new platforms while ensuring stability and performance. The Linux community has shown particular attention to integrating these components for critical environments, such as data centers and HPC clusters. Furthermore, the integration of specific drivers for next-generation GPUs accelerates graphics processing and modeling, essential for applications in Artificial Intelligence and Deep Learning. Key Hardware Support in Linux 6.15
• Benefits

Intel Arrow Lake & AMD Ryzen 7000 Processors

Introduction of a new resource manager

Improvements in real-time task management

Increased support for ARM and RISC-V architectures

• Integration of new APIs for hardware control
• Further optimized file systems
• Outlook for Linux 6.16 and beyond
• Impacts for users
• New APIs for hardware management