Linux Kernel: Display Timing Fixes and a Server-Side Security Sweep
Today's merges center on two reliability fronts: a rework of AMD's display interrupt handling to fix flip and vblank timing bugs, and a batch of ksmbd fixes closing memory-safety and information-disclosure holes in SMB request handling.
Duration: PT2M36S
Episode overview
This episode is a short developer briefing from Linux Kernel.
It explains recent repository work in plain language.
- Show: Linux Kernel
- Published: 2026-07-18T13:12:32Z
- Audio duration: PT2M36S
Transcript excerpt
This excerpt keeps the crawler page concise. Listen to the episode or use the RSS feed for the full update.
Good day. It's July 18th, 2026, and this is your Linux Kernel briefing.
The top story today is display reliability on AMD hardware. A cluster of commits from Leo Li and collaborators reworks how DCN graphics hardware reports vblank and pageflip completion. The core problem: signals like VSTARTUP and GRPH underscore PFLIP can get masked by power-gating, sync locks, or cache scan-out,…
The second theme is security hardening in the ksmbd SMB server, folded in from Steve French's fixes under commit 1229e2e. Multiple issues stand out: an integer overflow in file allocation sizing that could let a malicious client truncate a file, uninitialized heap bytes leaking through SMB2 read padding, and a stack…
Elsewhere, Mario Limonciello's device-link fix, commit 75c8746, addresses a real-world resume race on AMD laptops where USB controllers could wake before the GPU, killing USB devices. And on the storage side, four fixes to the Designware SATA driver close an infinite-loop risk in NCQ tag scanning.
What's next: watch for stable-tree backports on the DCN interrupt changes, since several commits already carry stable tags. And expect continued ksmbd hardening as more SMB2 parsing paths get…
That's…
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