Linux Kernel: The Great String Function Cleanup
This merge window's commits show a coordinated push across crypto, tracing, and security subsystems to replace legacy and unsafe string-handling functions with modern, bounds-safe alternatives, alongside expanded integrity measurement and a new formal no-IOMMU mode for VFIO.
Duration: PT2M40S
Episode overview
This episode is a short developer briefing from Linux Kernel.
It explains recent repository work in plain language.
- Show: Linux Kernel
- Published: 2026-08-20T13:16:19Z
- Audio duration: PT2M40S
Transcript excerpt
This excerpt keeps the crawler page concise. Listen to the episode or use the RSS feed for the full update.
You're listening to Linux Kernel, your daily briefing for August 20th, 2026.
The signal this cycle isn't any single feature—it's a cleanup effort that cuts across crypto, security, and tracing subsystems all at once: the kernel is systematically retiring old, unsafe string and memory functions in favor of safer, bounds-checked replacements.
Start with security. In SELinux, Paul Moore's pull replaces strlcat calls with seq buf functions, and swaps a legacy get free page call for kmalloc. In tracing, Steven Rostedt's update does the same thing—strcpy calls become strscpy, and histogram and trigger code now leans on seq buf instead of hand-rolled string…
Second theme: integrity measurement is getting more thorough. Mimi Zohar's integrity pull, commit a51ec5e, adds a new config option so IMA initialization can be deferred until late in boot, avoiding TPM-bypass mode when hardware init is delayed—a real fix for a race that's been silently weakening measurement…
Third: hardening through defensive code changes. Audit's update, commit 83453b6, replaces two BUG_ON crash points with a warning and a lockdep assertion, and fixes a reference-counting bug where audit trees could lose their last…
Wor…
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