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Fedora 43: direwolf Critical Reachable Assertion and Buffer Overflow DoS

Fedora 43: direwolf Critical Reachable Assertion and Buffer Overflow DoS

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 Dec 24 2025 Richard Shaw - 1.8.1-1 - Update to 1.8.1. - Build with libgpiod.

[ 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]

[ 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-2025-793e1e1341' at the command line. For more information, refer to the dnf documentation available at

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