Fedora Linux 43 Overview

Fedora Linux 43

Cutting-edge innovation with stability, security, and freedom.

Fedora Linux is a leading free and open-source operating system developed by the global Fedora Project community. Sponsored by Red Hat, Fedora delivers cutting-edge innovation while maintaining stability, security, and ease of use across desktop, server, cloud, and IoT environments.

Fedora 43 continues the project’s tradition of advancing the Four Foundations — Freedom, Friends, Features, and First, providing a completely open-source platform that fosters collaboration and rapid innovation.

Key Features

Completely Free and Open Source: Built entirely from freely available software and content, promoting transparency and innovation.
Community Driven: Backed by thousands of contributors and a strong collaboration between Red Hat and global volunteers.
Feature-Rich & Forward-Looking: Integrates the latest open-source technologies for developers, administrators, and enterprises.
Secure & Reliable: Includes the latest upstream security patches, modern encryption standards, and virtualization protections.

What’s New in Fedora Linux 43

System and Installation

New WebUI Installer for Spins — Simplified installation through Anaconda’s modern web-based interface.
MBR Deprecation — GPT is now required for new UEFI installations.
DNF5 Package Manager — Faster performance and reduced resource usage.
Expanded /boot Partition — Default size increased to 2 GiB for modern boot requirements.

Core Technologies

Confidential Virtualization: Now supports Intel TDX alongside AMD SEV-SNP and SEV-ES.
RPM 6.0: Supports OpenPGP v6, PQC keys, and multiple package signatures.
Automatic Updates: Enabled by default on Fedora Kinoite; easily managed via Software Updates preferences.
Stratis 3.8.5: Enhanced encrypted filesystem and network-unlock support.

Developer Tools

Updated Toolchains: GCC 15.2, glibc 2.42, LLVM 21, GDB 16.3
Languages: Python 3.14, Go 1.25, Ruby on Rails 8.0, Java 25 (LTS), Tomcat 10.1
Modern Language Support: Haskell GHC 9.8, Perl 5.42, Idris 2, Hare Programming Language
Databases: PostgreSQL 18, MySQL 8.4, Dovecot 2.4

Performance and Infrastructure

Initrd Compression: Switched to zstd for faster boot times.
YASM Deprecated: Replaced with NASM.
Enhanced Authentication: SSSD now supports Keycloak and Entra ID (Azure AD) as identity providers.

Available Editions

Flagship Editions: Workstation, Server, Cloud, CoreOS, IoT
Atomic Desktops: Silverblue, Kinoite, Cosmic, Budgie, Sway
Alternate Spins: Cinnamon, Xfce, LXQt, and others

Use Cases

Development & CI/CD: Latest compilers, toolchains, and container support.
Server & Cloud Deployments: Optimized for KVM, Azure, and OpenStack environments.
Secure Virtualization: Enhanced confidential computing support with Intel TDX and AMD SEV.
Education & Research: Fully open platform ideal for experimentation and learning.

Disclaimer: This VM contains free, open-source software. Trademarks are for identification only and don’t imply endorsement. Fedora and its logo are trademarks of Red Hat, Inc.; other names may be trademarks of their owners.

Fedora 43

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