CVE-2026-54579

mport is the MidnightBSD Package Manager. Prior to 2.7.8, ping() in libmport/ping.c accepted ICMP replies without validating icmp_id or icmp_seq and parsed the reply using a fixed IP-header offset instead of ip_hl. A network attacker able to inject or spoof visible ICMP replies could influence mirror latency selection, while a malformed packet carrying IP options could shift the ICMP header and trigger an out-of-bounds read. This issue is fixed in version 2.7.8.

• CWE-125
• CWE-345

• https://github.com/MidnightBSD/mport/security/advisories/GHSA-qc2f-2j7j-m3r7

Published

Sep 17, 2026

Last Modified

Sep 24, 2026

Status

Deferred

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