Linux Kernel Daily: The RC4 Fix Convergence
As the 7.3 release candidate cycle matures, Linus pulled a wave of subsystem fixes spanning keys, networking, sound, DMA mapping, GPIO, and power sequencing — with networking and MPTCP race conditions standing out as the most consequential.
Duration: PT2M19S
Episode overview
This episode is a short developer briefing from Linux Kernel Daily.
It explains recent repository work in plain language.
- Show: Linux Kernel Daily
- Published: 2026-09-18T06:01:43Z
- Audio duration: PT2M19S
Transcript excerpt
This excerpt keeps the crawler page concise. Listen to the episode or use the RSS feed for the full update.
This is Linux Kernel Daily for September 18th, 2026.
The signal today is release-candidate convergence: six major pull requests landed, all fixing regressions and edge-case bugs rather than adding features. That's expected this deep into an RC cycle, but the concentration of race conditions and boundary checks is worth noting.
The clearest theme is networking correctness under stress. Paolo Abeni's net pull, commit b5a051f, folds in over a hundred fixes, but MPTCP got special attention. Commit 2b0f561 fixes a rare recursive lock scenario in the receive path — a subflow reset could trigger mptcp_data_ready to call back into itself and try…
The second theme is defensive boundary checking across subsystems. The keys pull fixes an integer overflow in encrypted key blob length and a boundary check in TPM2 command loading. The DMA-mapping pull, tag dma-mapping-7.3, fixes a regression where encrypted memory access broke for IOMMU-backed devices, plus a…
Sound saw the largest single pull, 33 commits, mostly device-specific quirks for USB audio and HD-audio hardware, plus a couple of ALSA core fixes for use-after-free and timer race conditions during card release.
What to remember: none of…
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