Upstream information

CVE-2025-67269 at MITRE

Description

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.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having important severity.

CVSS v3 Scores
CVSS detail CNA (0b0ca135-0b70-47e7-9f44-1890c2a1c46c) CNA (CISA-ADP)
Base Score 7.5 7.5
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network Network
Attack Complexity Low Low
Privileges Required None None
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact None None
Integrity Impact None None
Availability Impact High High
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entry: 1255914 [NEW]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
SUSE Liberty Linux 10
  • gpsd >= 3.26.1-1.el10_1.1
  • gpsd-clients >= 3.26.1-1.el10_1.1
  • python3-gpsd >= 3.26.1-1.el10_1.1
 Patchnames:
RHSA-2026:0770
SUSE Liberty Linux 9
  • gpsd-minimal >= 3.26.1-1.el9_7.1
  • gpsd-minimal-clients >= 3.26.1-1.el9_7.1
 Patchnames:
RHSA-2026:0771
openSUSE Tumbleweed
  • gpsd >= 3.27.3-1.1
  • gpsd-clients >= 3.27.3-1.1
  • gpsd-devel >= 3.27.3-1.1
  • gpsd-qt6-devel >= 3.27.3-1.1
  • libQgpsmm32 >= 3.27.3-1.1
  • libgps32 >= 3.27.3-1.1
  • python3-gpsd >= 3.27.3-1.1
 Patchnames:
openSUSE-Tumbleweed-2026-10008

SUSE Timeline for this CVE

CVE page created: Fri Jan 2 18:00:08 2026
CVE page last modified: Wed Jul 1 15:31:07 2026