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Fedora 42: direwolf Critical DoS Issues FEDORA-2025

Linuxsecurity •LinuxSecurity Advisories • January 2, 2026

Dire Wolf is a modern software replacement for the old 1980's style TNC built with special hardware. Without any additional software, it can perform as an APRS GPS Tracker, Digipeater, Internet Gateway (IGate), APRStt gateway. It can also be used as a virtual TNC for other applications such as APRSIS32, UI-View32, Xastir, APRS-TW, YAAC, UISS, Linux AX25, SARTrack, Winlink Express, BPQ32, Outpost PM, and many others. Update Information :

Dire Wolf is a modern software replacement for the old 1980's style

TNC built with special hardware. Without any additional software, it

can perform as an APRS GPS Tracker, Digipeater, Internet Gateway

(IGate), APRStt gateway. It can also be used as a virtual TNC for

other applications such as APRSIS32, UI-View32, Xastir, APRS-TW, YAAC,

UISS, Linux AX25, SARTrack, Winlink Express, BPQ32, Outpost PM, and many

* Wed Dec 24 2025 Richard Shaw - 1.8.1-1 - Update to 1.8.1. - Build with libgpiod. * Wed Jul 23 2025 Fedora Release Engineering - 1.7-12 - Rebuilt for * Tue May 27 2025 Remi Collet - 1.7-11 - rebuild for new gpsd * Tue Apr 8 2025 Davide Cavalca - 1.7-10 - Use the journal for stdout/stderr - Move audio levels example to README.fedora - Backport upstream PR to use system libraries * Tue Feb 11 2025 Zbigniew J\u0119drzejewski-Szmek - 1.7-9 - Add sysusers.d config file to allow rpm to create users/groups automatically * Thu Feb 6 2025 Richard Shaw - 1.7-8 - Rebuild for hamlib 4.6.

[ 1 ] Bug #2401397 - direwolf-1.8.1 is available [ 2 ] Bug #2424537 - CVE-2025-34458 direwolf: wb2osz/direwolf <= 1.8 Reachable Assertion DoS [fedora-42] [ 3 ] Bug #2424538 - CVE-2025-34458 direwolf: wb2osz/direwolf <= 1.8 Reachable Assertion DoS [fedora-43] [ 4 ] Bug #2424539 - CVE-2025-34457 direwolf: wb2osz/direwolf <= 1.8 Stack-based Buffer Overflow DoS [fedora-42] [ 5 ] Bug #2424540 - CVE-2025-34457 direwolf: wb2osz/direwolf <= 1.8 Stack-based Buffer Overflow DoS [fedora-43]

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2025-614bda8830' at the command line. For more information, refer to the dnf documentation available at

The full story

This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Critical DoS Vulnerabilities in Dire Wolf Affect Fedora Users Fedora 42 and 43 have reported critical denial-of-service vulnerabilities in the Dire Wolf software, which is utilized as a modern replacement for traditional TNC hardware. These vulnerabilities include a reachable assertion and buffer overflow, potentially impacting users relying on Dire Wolf for APRS and other applications. 2 sources 37

Extracted Entities

Attack Types (1)

Denial of Service

CVEs (2)

CVE-2025-34457 CVE-2025-34458