VDB-339420 · CVE-2025-67269 · Nessus 281614

gpsd gpsd/packet.c nextstate integer underflow

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5.5	$0-$5k	0.00

Summaryinfo

A vulnerability was found in gpsd and classified as critical. This issue affects the function nextstate of the file gpsd/packet.c. The manipulation results in integer underflow. This vulnerability is known as CVE-2025-67269. No exploit is available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability, which was classified as critical, was found in gpsd (the affected version is unknown). Affected is the function nextstate of the file gpsd/packet.c. The manipulation with an unknown input leads to a integer underflow vulnerability. CWE is classifying the issue as CWE-191. The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result. This is going to have an impact on availability. CVE summarizes:

An integer underflow vulnerability exists in the `nextstate()` function in `gpsd/packet.c` of gpsd versions prior to commit `ffa1d6f40bca0b035fc7f5e563160ebb67199da7`. When parsing a NAVCOM packet, the payload length is calculated using `lexer->length = (size_t)c - 4` without checking if the input byte `c` is less than 4. This results in an unsigned integer underflow, setting `lexer->length` to a very large value (near `SIZE_MAX`). The parser then enters a loop attempting to consume this massive number of bytes, causing 100% CPU utilization and a Denial of Service (DoS) condition.

The advisory is shared for download at gitlab.com. This vulnerability is traded as CVE-2025-67269 since 12/08/2025. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 281614 (Linux Distros Unpatched Vulnerability : CVE-2025-67269), which helps to determine the existence of the flaw in a target environment.

Applying the patch ffa1d6f40bca0b035fc7f5e563160ebb67199da7 is able to eliminate this problem. The bugfix is ready for download at gitlab.com.

The vulnerability is also documented in the databases at Tenable (281614) and CERT Bund (WID-SEC-2026-0138). Once again VulDB remains the best source for vulnerability data.

Affected

Debian Linux
Oracle Linux
RESF Rocky Linux
Red Hat Enterprise Linux

Productinfo

Name

gpsd

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Integer underflow
CWE: CWE-191 / CWE-189
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
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Nessus ID: 281614
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-67269

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: ffa1d6f40bca0b035fc7f5e563160ebb67199da7

Timelineinfo

12/08/2025 CVE reserved
01/02/2026 +25 days Advisory disclosed
01/02/2026 +0 days VulDB entry created
01/20/2026 +18 days VulDB entry last update

Sourcesinfo

Advisory: ffa1d6f40bca0b035fc7f5e563160ebb67199da7
Status: Confirmed

CVE: CVE-2025-67269 (🔒)
GCVE (CVE): GCVE-0-2025-67269
GCVE (VulDB): GCVE-100-339420
CERT Bund: WID-SEC-2026-0138 - Red Hat Enterprise Linux (gpsd): Mehrere Schwachstellen

Entryinfo

Created: 01/02/2026 17:17
Updated: 01/20/2026 11:40
Changes: 01/02/2026 17:17 (55), 01/03/2026 03:50 (2), 01/20/2026 09:13 (7), 01/20/2026 11:40 (1)
Complete: 🔍
Cache ID: 216::103