Critical · published January 2, 2026
🔥 A heap-based out-of-bounds write vulnerability in gpsd can turn your satellite data into a wild ride! Think of this as a hotel with a skyview balcony where guests can reserve more spaces than available. If someone tries to cram in too many guests, they could push the walls out, leading to a total collapse! An attacker could exploit this to corrupt memory, causing the service to crash (Denial of Service) or even execute arbitrary code, which could have devastating consequences for your system's stability and security.
Think of this as a hotel with a skyview balcony where guests can reserve more spaces than available. If someone tries to cram in too many guests, they could push the walls out, leading to a total collapse! This vulnerability arises in the hnd_129540 function of the drivers/driver_nmea2000.c file, where user input on satellite count isn't properly validated against the allocated skyview array size, allowing writes beyond its bounds.
An attacker could exploit this to corrupt memory, causing the service to crash (Denial of Service) or even execute arbitrary code, which could have devastating consequences for your system's stability and security. Update gpsd to the latest version post-commit dc966aa to mitigate this risk. Ensure proper validation of user-supplied data and conduct a thorough review of your application to avoid future vulnerabilities. You can tackle this! Follow the steps, and you'll keep your system secure! 🛡️