Debian 11: gpsd Critical DoS Heap Issue DLA-4441-1 CVE-2025

Multiple vulnerabilities were fixed in gpsd a service daemon that monitors one or more GNSS (GPS) or AIS receivers attached to a host computer through serial or USB ports. CVE-2025-67268 gpsd 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. CVE-2025-67269 An integer underflow vulnerability exists in the `nextstate()` function in `gpsd/packet.c`. When parsing a NAVCOM packet, the payload length is calculated using `lexer->length = (size_t)c - 4` without checking if

Multiple vulnerabilities were fixed in gpsd a service daemon that monitors one or more GNSS (GPS) or AIS receivers attached to a host computer through serial or USB ports. CVE-2025-67268 gpsd 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. CVE-2025-67269 An integer underflow vulnerability exists in the `nextstate()` function in `gpsd/packet.c`. When parsing a NAVCOM packet, the payload length is calculated using `lexer->length = (size_t)c - 4` without checking if