CVE-2025-67268: Gpsd Project Gpsd

Critical severity, CVSS 9.8. EPSS: 0.8% chance of exploitation in the next 30 days.

gpsd before commit dc966aa contains a heap-based out-of-bounds write vulnerability in the drivers/driver_nmea2000.c file. The hnd_129540 function, which handles NMEA2000 PGN 129540 (GNSS Satellites in View) packets, fails to validate the user-supplied satellite count against the size of the skyview array (184 elements). This allows an attacker to write beyond the bounds of the array by providing a satellite count up to 255, leading to memory corruption, Denial of Service (DoS), and potentially arbitrary code execution.

Affected products

• Gpsd Project Gpsd: before 3.27.1 (fixed in 3.27.1)

Published 2026-01-02. Last modified 2026-07-15.