Security

• Sweet, a syscall that can change read-only memory!

  • Hmmm, this is a power that can only be used for Good Or Evil

• Can we make it only capable of resolving lazy bindings to their correct values?

  • Only want dynamic linker to be able to call this

  • Don't want this to be useful as a target of Return-Oriented-Programming

  • Don't want it to be able to change arbitrary memory