d5f78a37d3
The SOH/STX control frame carries a client-supplied filename that was passed straight to FSCom open/remove/exists, so a ".." component could write, read, or delete outside the filesystem root. On embedded LittleFS this is largely inert (no parent of the partition root); on the Portduino daemon FSCom is the host filesystem under a mountpoint, so it is a real arbitrary-path write/read/delete. Validate the filename before any FS access: reject empty and any ".." path component, and NAK the transfer. Absolute and subdirectory paths are still accepted - the file manager transfers them from the manifest and PortduinoFS confines them to its mountpoint - so only traversal out of the root is blocked. Reachable only from a local client connection (PhoneAPI: BLE/USB/serial/TCP), not over the RF mesh; on the daemon the TCP API makes it network-reachable. native-suite-count goes to 34: +1 for the new test_xmodem suite and +1 correcting a pre-existing miscount (it read 32 for 33 suite directories). 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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