Linux Kernel drops legacy strncpy API

// 45d agoNEWS

Linux Kernel drops legacy strncpy API

The Linux Kernel project has completed a six-year refactoring effort to eliminate the legacy and error-prone strncpy string manipulation function from its codebase. Spanning 360 patches, the project replaced all instances with safer alternatives like strscpy to close memory safety vulnerabilities such as buffer overflows.

// ANALYSIS

Eliminating legacy APIs is extremely tedious but critical for securing foundational software infrastructure.

–Legacy string APIs like strncpy are notorious for creating security vulnerabilities due to manual -termination requirements.
–Replacing the API across the entire kernel requires a massive, multi-year coordination effort and hundreds of patches.
–The successful removal sets a strong precedent for other long-lived, large-scale C codebases to address technical debt.

// TAGS

linux-kernelsecuritystrncpyrefactoringc

DISCOVERED

45d ago

2026-06-21

PUBLISHED

45d ago

2026-06-20

RELEVANCE

8/ 10

AUTHOR

simonpure

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