Reachable Assertion The advisory has been revoked - it doesn't affect any version of package direwolf (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN13-DIREWOLF-14559939
- published24 Dec 2025
- disclosed22 Dec 2025
Introduced: 22 Dec 2025
CVE-2025-34458 (opens in a new tab)Amendment
The Debian security team deemed this advisory irrelevant for Debian:13.
NVD Description
Note: Versions mentioned in the description apply only to the upstream direwolf package and not the direwolf package as distributed by Debian.
wb2osz/direwolf (Dire Wolf) versions up to and including 1.8, prior to commit 3658a87, contain a reachable assertion vulnerability in the APRS MIC-E decoder function aprs_mic_e() located in src/decode_aprs.c. When processing a specially crafted AX.25 frame containing a MIC-E message with an empty or truncated comment field, the application triggers an unhandled assertion checking for a non-empty comment. This assertion failure causes immediate process termination, allowing a remote, unauthenticated attacker to cause a denial of service by sending malformed APRS traffic.
References
- https://security-tracker.debian.org/tracker/CVE-2025-34458
- https://github.com/marlinkcyber/advisories/blob/main/advisories/MCSAID-2025-010-direwolf-stack-buffer-overflow-kiss-frame.md
- https://github.com/wb2osz/direwolf/commit/3658a87
- https://github.com/wb2osz/direwolf/issues/618
- https://www.vulncheck.com/advisories/wb2osz-direwolf-reachable-assertion-dos