7.5

CVE-2025-67269

Exploit
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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Gpsd Project ≫ Gpsd Version < 3.27.1
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.49% 0.394
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
CISA-ADP 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
0b0ca135-0b70-47e7-9f44-1890c2a1c46c 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-191 Integer Underflow (Wrap or Wraparound)

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.

https://gitlab.com/gpsd/gpsd/-/commit/ffa1d6f40bca0b035fc7f5e563160ebb67199da7
Patch
https://gitlab.com/gpsd/gpsd
Product
https://bugzilla.redhat.com/show_bug.cgi?id=2426810
https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-67269.json
https://access.redhat.com/errata/RHSA-2026:0770
https://access.redhat.com/errata/RHSA-2026:0771
https://github.com/Jaenact/gspd_cve/blob/main/CVE-2025-67269/README.md
Third Party Advisory
Exploit
https://access.redhat.com/security/cve/CVE-2025-67269