wb2osz/direwolf (Dire Wolf) versions up to and including 1.8.1, 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.
Fix
Patch, vendor advisory and mitigation references on NVD 1
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 8.7 · wb2oszNVD modified 2026-10-29 20:19
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 4
- https://github.com/marlinkcyber/advisories/blob/main/advisories/MCSAID-2025-010-direwolf-stack-buffer-overflow-kiss-frame.md technical-description, exploit
- https://github.com/wb2osz/direwolf/issues/618 issue-tracking
- https://github.com/wb2osz/direwolf/commit/3658a87 patch
- https://www.vulncheck.com/advisories/wb2osz-direwolf-reachable-assertion-dos third-party-advisory