Changes

The 3DS uses the XN feature of the ARM processor, and only apps that have the necessary permissions in their headers can set memory to be executable. This means that although a usable buffer overflow exploit would still be useful, it would not go the entire way towards allowing code to be run in an easy/practical fashion (ie an actual homebrew launcher) - for that, an exploit in the kernel would probably need to be found. A buffer overflow exploit does, however, provide enough wriggle room through the use of return-oriented programming to potentially trigger a kernel exploit if and when a useful one is found.

The 3DS uses the XN feature of the ARM processor, and only apps that have the necessary permissions in their headers can set memory to be executable. This means that although a usable buffer overflow exploit would still be useful, it would not go the entire way towards allowing code to be run in an easy/practical fashion (ie an actual homebrew launcher) - for that, an exploit in the kernel would probably need to be found. A buffer overflow exploit does, however, provide enough wriggle room through the use of return-oriented programming to potentially trigger a kernel exploit if and when a useful one is found.