The implementation sidesteps the entire question of the kernel’s ability to write to unwritable userspace memory! It exerts the kernel’s control over the virtual memory subsystem to bypass the MMU entirely, allowing the kernel to simply write to its own writable address space. This renders the CR0.WP discussion moot.
Regarding mobile device usage, do you implement protective measures or embrace risk?
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Автор: Екатерина Ештокина
Иллюстрация: Tyler Clemmensen / Unsplash