Linux Kernel: Release Candidate Four Stabilizes Ahead of Merge
This is a classic release-candidate day for Linus Torvalds' tree — six subsystem pull requests, all fixes, no new features, converging on TCP and MPTCP correctness, security hardening in keys and USB-audio, and null-pointer cleanup in power sequencing and GPIO.
Duration: PT2M32S
Episode overview
This episode is a short developer briefing from Linux Kernel.
It explains recent repository work in plain language.
- Show: Linux Kernel
- Published: 2026-09-18T13:17:44Z
- Audio duration: PT2M32S
Transcript excerpt
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Good day, and welcome to Linux Kernel briefing for September 18th, 2026.
The theme across today's activity is convergence toward stability for release candidate four. Every merge Linus pulled today is a fixes-only branch — networking, sound, keys, DMA mapping, GPIO, and power sequencing — the usual signal that a release is closing in and maintainers are trimming loose ends rather than…
The biggest cluster of related work is in MPTCP and TCP. Paolo Abeni merged three fixes together under commit 3b95a04. One, in commit 2b0f561, closes a rare recursion bug where the receive path could re-enter itself under a subflow reset and try to grab the same lock twice — the fix explicitly flushes the queue and…
Second theme: defensive hardening. The keys subsystem fix, pulled in 5dd1818, patches an integer overflow in encrypted key blobs and a boundary check in trusted key loading — both security-relevant. USB-audio picked up similar hardening against fuzzer-found out-of-bounds writes in the 6fire driver, folded into the…
Third, a handful of null-pointer and reference-leak fixes — GPIO's fwnode leak fix in 61cc777, and three separate null-pointer and error-path fixes in power sequencing under…
What…
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