Linux Kernel 7.3 RC7 Released: A Quick Look at the Final Test Candidate

Linus Torvalds officially released the seventh release candidate (RC7) for the upcoming Linux Kernel 7.3 version on Sunday, October 11, 2026. Linux 7.3-rc7 marks the final stretch of testing before the official stable launch. Although travel fatigue from the Maintainer Summit and Linux Plumbers Conference delayed the announcement by six hours, development remains completely on track.

Overall, this release candidate focuses heavily on hardening the virtual file system, refining core networking, and expanding automated test suites.

What's New in Linux Kernel 7.3 RC7?

At first glance, the change statistics show a somewhat unusual pattern. Specifically, automated selftests in the tools/testing/ directory make up nearly half of the total patch. However, this expansion comes directly from a comprehensive suite of new tests that validate recent mount-handling bug fixes.

When you look past the test suite, the remaining changes follow a standard late-stage distribution. Drivers account for roughly half of the remaining code, while virtual file system updates, networking improvements, and architecture fixes cover the rest.

Here is a detailed breakdown of the main updates in Linux 7.3-rc7:

1. Virtual File System (VFS) and Mount Handling

The virtual file system receives significant attention in this build. The kernel team addressed several edge cases in mount handling to improve overall system security and stability:

• Mount Layer Hardening: The kernel now keeps copied mounts unbindable and strictly refuses MOVE_MOUNT_SET_GROUP commands on unbindable targets.
• Namespace Protection: Updated rules prevent busy propagated copies from hiding references during unmount operations. Additionally, the code ensures that unmount routines never walk dead or unmounted mount trees.
• Automount and Loop Safeguards: New checks prevent recursive bind mounts from pinning caller mount namespaces. Furthermore, the code fixes locking mechanisms during automount and pivot_root operations.
• Empty Namespace Handling: The update introduces an empty, immutable regular file in nullfs and disables file locking on nullfs. Consequently, reading the root of an empty mount namespace stalls appropriately during page faults.

2. Graphics and Display Drivers (DRM)

Graphics drivers represent a major portion of the driver fixes in rc7. Developers delivered several key stability updates:

• AMD GPU Improvements: The team made Mac framebuffer workarounds generic across platforms. Furthermore, display timing routines now prevent replacing a sink mode that shares native totals.
• Intel Xe Updates: A targeted fix ensures that xe_mmio_wait32() properly honors maximum delay and sleep parameters.
• Bridge Driver Stability: Updates resolve unlocked list access and deletion issues inside drm_bridge handling.

3. Networking, Bluetooth, and Security

Networking and communications drivers received important bug fixes across multiple protocols:

• Bluetooth Stability: Serialized connection routines now protect sco_conn lifetimes against incoming data paths. Additionally, the stack rejects concurrent BIS listener setups and serializes concurrent connection calls.
• TCP and IP Routing: The network stack rejects net_iov in zerocopy receive mapping hints. Moreover, routing routines stop PMTU walks and route notification sizing whenever nexthop groups shrink.
• Socket Lifetimes: New lifetime protections safeguard clcsock structures in SMC and hold node references found by link name in TIPC.

4. Architecture, Storage, and Input Updates

Core architecture code and storage drivers also gained important refinements:

• x86 Architecture: The release includes a targeted fix for AMD CPU TLBI Erratum #1718.
• RISC-V Updates: The build limits SiFive errata fixes to 64-bit configurations, corrects output operands in vector context saves, and rejects CFI regset access when extensions are missing.
• Device Mapper Security: Fixes resolve buffer overflow risks in dm-integrity with large tag sizes and reject the LMK IV mode when used alongside AEAD ciphers in dm-crypt.
• Input and Wireless: The update restores legacy BSS settings after MLO teardown on mt76/mt7925 wireless devices. Furthermore, input drivers add support for the 8BitDo Pro 2 Wired Controller for Xbox.

Download and Test Linux 7.3-RC7

Users and testing enthusiasts can download Linux 7.3-rc7 directly from the Official Linux Kernel Archives. Alternatively, you can browse or clone the complete source tree from Linus Torvalds' Git repository.

Because Linux 7.3-rc7 is a pre-release build, it is intended primarily for kernel developers, system testers, and advanced users who are comfortable compiling the kernel from source.

Release candidates may contain unresolved bugs or regressions, so it is best to stick with a stable kernel version if you rely on your machine for everyday work or critical tasks.

Estimated Release Schedule for Linux Kernel 7.3

Because this candidate revealed no critical blockers or regressions, the release calendar remains firmly on schedule.

Linus Torvalds projects the final stable release of Linux Kernel 7.3 for Sunday, October 18, 2026. Unless developers discover a sudden critical bug that requires an extra rc8 candidate, users can expect the stable release on October 18, 2026.

Linux 7.3 Release Timeline:

• August 30, 2026: Linux 7.3-rc1 (Released)
• September 6, 2026: Linux 7.3-rc2 (Released)
• September 13, 2026: Linux 7.3-rc3 (Released)
• September 20, 2026: Linux 7.3-rc4 (Released)
• September 27, 2026: Linux 7.3-rc5 (Released)
• October 4, 2026: Linux 7.3-rc6 (Released)
• October 11, 2026: Linux 7.3-rc7 (Released)
• October 18, 2026: Linux 7.3 Final Release (Estimated)