Ben MeadorsandGitHub
f6f3284cfc
On lockdown builds (MESHTASTIC_PHONEAPI_ACCESS_CONTROL, nRF52) the SerialConsole is a process-lifetime singleton, so the per-connection admin-auth slot keyed by its inherited PhoneAPI* is reused for every USB/serial client for the whole boot. An operator's admin unlock stayed latched across serial client swaps: an attacker plugging into the USB/serial port before the prior session's 15-minute inactivity timeout inherited admin authorization -- the serial analog of the BLE stale-session reuse bug closed by resetting state in onConnect()/onDisconnect(). Sample the USB-CDC host link (DTR/mount) state each runOnce(); on the link-drop edge call close(), which frees the auth slot and resets PhoneAPI state so whoever connects next re-locks via handleStartConfig()'s !isConnected() branch on their first want_config -- the same physical-link boundary BLE enforces in onConnect(). On the nRF52 TinyUSB (Adafruit) core, (bool)Port == tud_cdc_n_connected(), which goes false on cable unplug or host port-close. Console transports without a real DTR line fall back to the existing inactivity timeout, no worse than before. Entirely nRF52-lockdown-gated; non-lockdown builds are byte-identical.
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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