Integer underflow in gpsd - CVE-2025-67269
Published: January 12, 2026
Vulnerability identifier: #VU121180
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-67269
CWE-ID: CWE-191
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vendor: Eric S. Raymond
Affected software:
gpsd
gpsd
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service attack.
The vulnerability exists due to integer underflow within the nextstate() function in gpsd/packet.c. A remote attacker can send a specially crafted NAVCOM packet to the affected application, trigger an integer underflow and perform a denial of service attack.
How to mitigate CVE-2025-67269
Install updates from vendor's website.