CVE-2025-67268: gpsd before commit dc966aa contains a heap-based out-of-bounds write vulnerability in the drivers/driver_nmea2

Q: How do I fix CVE-2025-67268?

gpsd: upgrade to 3.27.1. Exact commands for each OS are on this page.

Q: Is CVE-2025-67268 being exploited?

CVE-2025-67268 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-67268 affect?

CVE-2025-67268 affects gpsd. Severity is critical (CVSS 9.8). 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 us

Q: How urgent is CVE-2025-67268?

Priority 61/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2025-67268 is a critical-severity flaw (CVSS 9.8) affecting gpsd. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 corr

Why this priority

Critical severity
Public exploit reference
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 44%)
CISA exploited list	No
Weakness	CWE-122, CWE-1285
Published	2026-01-02
Last modified	2026-07-15

Publisher (CNA): MITRE · Vendor: gpsd project

Last updated 2026-07-15 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-01-02 16:17 UTCPublished CVE record published
2026-07-15 02:17 UTCUpdated Record last modified

gpsd project gpsd UPGRADE

Affected: < 3.27.1

Fixed in: 3.27.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy gpsd || rpm -q gpsd || gpsd --version

2. UPGRADE to 3.27.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade gpsd

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade gpsd

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Exact fixes by distribution

Fedora ELN · fwupd-efi · FIXED · 1.9-3.eln159 · FEDORA-2026-44fd42db42 · source

sudo dnf upgrade --advisory=FEDORA-2026-44fd42db42

Fedora 46 · crest · FIXED · 3.0.2-1.fc46 · FEDORA-2026-b49adefa8f · source

sudo dnf upgrade --advisory=FEDORA-2026-b49adefa8f

Debian 12 · gpsd · FIXED · 3.22-4.1+deb12u1

sudo apt update && sudo apt install --only-upgrade gpsd dpkg --compare-versions "$(dpkg-query -W -f='${Version}' gpsd)" ge "3.22-4.1+deb12u1" && echo PATCHED || echo STILL-VULNERABLE

Debian 13 · gpsd · FIXED · 3.25-5+deb13u1

sudo apt update && sudo apt install --only-upgrade gpsd dpkg --compare-versions "$(dpkg-query -W -f='${Version}' gpsd)" ge "3.25-5+deb13u1" && echo PATCHED || echo STILL-VULNERABLE

RHEL 10 · gpsd · FIXED · gpsd-3.26.1-1.el10_1.1

sudo dnf upgrade --advisory=RHSA-2026:0770 rpm -q gpsd

RHEL 10.0 Extended Update Support · gpsd · FIXED · gpsd-3.25-17.el10_0.1

sudo dnf upgrade --advisory=RHSA-2026:1621 rpm -q gpsd

RHEL 9 · gpsd-minimal · FIXED · gpsd-minimal-3.26.1-1.el9_7.1

sudo dnf upgrade --advisory=RHSA-2026:0771 rpm -q gpsd-minimal

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Write-up: github.com/Jaenact/gspd_cve/blob/main/CVE-2025-67268/README.md

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-67268?

gpsd: upgrade to 3.27.1. Exact commands for each OS are on this page.

Is CVE-2025-67268 being exploited?

CVE-2025-67268 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-67268 affect?

CVE-2025-67268 affects gpsd. Severity is critical (CVSS 9.8). 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 us

How urgent is CVE-2025-67268?

Priority 61/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-58459 HIGH 7.8 UPGRADE gpsd through release-3.27.5, fixed at commit 4c06658, contains a command injection vulnerability in gpsprof th
CVE-2025-67269 HIGH 7.5 UPGRADE An integer underflow vulnerability exists in the `nextstate()` function in `gpsd/packet.c` of gpsd versions pr

References

← Back to latest CVEs