🛡️ Security

Use-After-Free (UAF)

A memory-safety bug in which a program keeps using a pointer to memory that has already been released. In the kernel, a use-after-free is a common starting point for privilege-escalation exploits because the freed memory can be reclaimed with attacker-controlled data.

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How Kernel TLS Moves Encryption Into the Kernel and What That Exposes

Kernel TLS trades a process boundary for throughput: the record parser that handles every byte a remote peer sends runs in ring 0. Here is what that buys, what it costs, and how to tell if you use it.

intermediate 6 min read

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