Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| n/a / n/a | affected n/a |
CWE
No CWE identifiers supplied.
References
- https://github.com/ntpsec/gpsd/commit/dc966aa74c075d0a6535811d98628625cbfbe3f4
- https://github.com/ntpsec/gpsd/blob/master/drivers/driver_nmea2000.c
- https://github.com/Jaenact/gspd_cve/blob/main/CVE-2025-67268/README.md
ADP enrichment
No English description supplied.
No references supplied.
A flaw was found in gpsd. The hnd_129540 function, responsible for handling NMEA2000 PGN 129540 (GNSS Satellites in View) packets, fails to properly validate the user-supplied satellite count. A remote attacker can exploit this by sending a specially crafted packet with an excessive satellite count, leading to a heap-based out-of-bounds write. This memory corruption can result in a Denial of Service (DoS) and potentially allow for arbitrary code execution.
- https://access.redhat.com/security/cve/CVE-2025-67268
- https://bugzilla.redhat.com/show_bug.cgi?id=2426835
- https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-67268.json
- https://access.redhat.com/errata/RHSA-2026:1621
- https://access.redhat.com/errata/RHSA-2026:0770
- https://access.redhat.com/errata/RHSA-2026:0771