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* Enable FORITFY and NX for native builds meshtasticd does have an executable stack and is not built with fortify, which makes exploitation of memory corruption bugs easier than it has to be. This enables fortify and a non-executable stack. This gives the following improvements on Debian Trixie: $ checksec --file=./.pio/build/native/meshtasticd RELRO STACK CANARY NX PIE RPATH RUNPATH Symbols FORTIFY Fortified Fortifiable FILE Partial RELRO No canary found NX enabled PIE enabled No RPATH No RUNPATH 13516 Symbols No 0 17 ./.pio/build/native/meshtasticd $ checksec --file=./.pio/build/native/meshtasticd RELRO STACK CANARY NX PIE RPATH RUNPATH Symbols FORTIFY Fortified Fortifiable FILE Partial RELRO Canary found NX enabled PIE enabled No RPATH No RUNPATH 13519 Symbols Yes 12 20 ./.pio/build/native/meshtasticd Tested with --sim mode I do not get any crashes or similar. * Enable FORTIFY and NX for native builds meshtasticd does have an executable stack and is not built with fortify, which makes exploitation of memory corruption bugs easier than it has to be. This enables fortify and a non-executable stack. This gives the following improvements on Debian Trixie: $ checksec --file=./.pio/build/native/meshtasticd RELRO STACK CANARY NX PIE RPATH RUNPATH Symbols FORTIFY Fortified Fortifiable FILE Partial RELRO No canary found NX enabled PIE enabled No RPATH No RUNPATH 13516 Symbols No 0 17 ./.pio/build/native/meshtasticd $ checksec --file=./.pio/build/native/meshtasticd RELRO STACK CANARY NX PIE RPATH RUNPATH Symbols FORTIFY Fortified Fortifiable FILE Partial RELRO Canary found NX enabled PIE enabled No RPATH No RUNPATH 13519 Symbols Yes 12 20 ./.pio/build/native/meshtasticd Tested with --sim mode I do not get any crashes or similar. * Enable FORTIFY and SP for native builds meshtasticd does have a stack canaries and is not built with fortify, which makes exploitation of memory corruption bugs easier than it has to be. This enables fortify and stack canaries. This gives the following improvements on Debian Trixie: $ checksec --file=./.pio/build/native/meshtasticd RELRO STACK CANARY NX PIE RPATH RUNPATH Symbols FORTIFY Fortified Fortifiable FILE Partial RELRO No canary found NX enabled PIE enabled No RPATH No RUNPATH 13516 Symbols No 0 17 ./.pio/build/native/meshtasticd $ checksec --file=./.pio/build/native/meshtasticd RELRO STACK CANARY NX PIE RPATH RUNPATH Symbols FORTIFY Fortified Fortifiable FILE Partial RELRO Canary found NX enabled PIE enabled No RPATH No RUNPATH 13519 Symbols Yes 12 20 ./.pio/build/native/meshtasticd Tested with --sim mode I do not get any crashes or similar. --------- Co-authored-by: Ben Meadors <benmmeadors@gmail.com>
Meshtastic Firmware
Overview
This repository contains the official device firmware for Meshtastic, an open-source LoRa mesh networking project designed for long-range, low-power communication without relying on internet or cellular infrastructure. The firmware supports various hardware platforms, including ESP32, nRF52, RP2040/RP2350, and Linux-based devices.
Meshtastic enables text messaging, location sharing, and telemetry over a decentralized mesh network, making it ideal for outdoor adventures, emergency preparedness, and remote operations.
Get Started
- 🔧 Building Instructions – Learn how to compile the firmware from source.
- ⚡ Flashing Instructions – Install or update the firmware on your device.
Join our community and help improve Meshtastic! 🚀
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