Linus Torvalds Slams Case-Insensitive Filesystems

2025-04-27

Linus Torvalds, creator of the Linux kernel, unleashed a scathing critique on case-insensitive file systems. He argued that such functionality is fundamentally flawed, citing numerous security vulnerabilities stemming from poor implementations. Many programs rely on case-sensitive filenames for security checks, and flawed case-insensitive implementations can bypass these checks, leading to serious security risks. Torvalds urged filesystem developers to abandon this flawed approach, emphasizing that case-sensitivity is the correct design choice.

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