fix(ping): eliminate seteuid race by pre-opening ICMP socket at init#521

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somethingwithproof wants to merge 3 commits intoCacti:developfrom

somethingwithproof:fix/seteuid-icmp-race

Commits on Mar 26, 2026

security: fix SQL injection, buffer overflow, and input validation (CRITICAL)
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committed
fix: NULL checks, switch fall-through, thread safety, buffer bounds (HIGH)
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committed
fix(ping): eliminate seteuid race by pre-opening ICMP socket at init
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committed