News · written 5 November 2026. A summary for readers, not technical advice — check the sources at the end for the details.

The Linux kernel is the core of every Linux system, from phones and routers to the servers that run most of the internet. A new version comes out roughly every nine or ten weeks.

What happened

Linus Torvalds released Linux 7.3 on 18 October 2026, on schedule. According to LWN, the cycle was "a record-breaker on all fronts": 18,765 non-merge changes from 3,021 developers, of whom 807 contributed to the kernel for the first time.

What is new

LWN's list of significant changes includes:

• failfs and fchroot() — a new filesystem that fails every operation, and a new system call, which together give programs new ways to lock a process away from the rest of the system.
• Scheduler work: the sched_ext sub-scheduler feature is complete, plus group-scheduling changes aimed at large systems.
• Filesystems and networking: alternative data streams in the ntfs3 driver for Windows-formatted disks, and a long list of improvements to the in-kernel SMB file server.
• Extensions to binfmt_misc, global per-CPU data for BPF programs, and working-set tracking for virtual machines.

What it means

• Most people never install a kernel by hand. Linux 7.3 reaches you through your distribution's updates when it is ready.
• Already moving on: kernel.org lists 7.3.1 as the latest stable release (30 October 2026) and 7.4-rc1 as the first test build of the next version (1 November 2026).
• A record number of first-time contributors is a good sign for the health of one of the world's largest open-source projects.

Sources

• LWN.net — Linux 7.3 release report, 18 October 2026 (release, statistics, significant changes).
• kernel.org — The Linux Kernel Archives (current stable and mainline releases).

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