Description
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
References9
- github.com/ntpsec/gpsd/commit/dc966aa74c075d0a6535811d98628625c… Patch
- github.com/Jaenact/gspd_cve/blob/main/CVE-2025-67268/README.md ExploitThird Party Advisory
- github.com/ntpsec/gpsd/blob/master/drivers/driver_nmea2000.c Product
- access.redhat.com/errata/RHSA-2026:0770
- access.redhat.com/errata/RHSA-2026:0771
- access.redhat.com/errata/RHSA-2026:1621
- access.redhat.com/security/cve/CVE-2025-67268
- bugzilla.redhat.com/show_bug.cgi?id=2426835
- security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-67268…
Metrics
- CVSS 3.1
-
9.8
CRITICAL
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 1% percentile: 57 · as of 11 November 2026
- CWE
- CWE-122CWE-1285
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