CVE-2026-54579 mport mirror-selection ping accepts insufficiently validated ICMP replies

mport is the MidnightBSD Package Manager. Prior to 2.7.8, ping in libmport/ping.c accepted ICMP replies without validating icmpid or icmpseq and parsed the reply using a fixed IP-header offset instead of iphl. A network attacker able to inject or spoof visible ICMP replies could influence mirror...