一线运维实战手记 · 云计算 · 数据库 · 故障排查
2026年9月4日

CVE-2026-66733 [HIGH] – Sonic 3 A.I.R. before commit 2492d18 contains an unbounded memory allocation vulnerability

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Sonic 3 A.I.R. before commit 2492d18 contains an unbounded memory allocation vulnerability in ReceivedPacketCache::enqueuePacket() that allows unauthenticated remote attackers to crash the server process by sending a crafted UDP packet with mUniquePacketID set to the maximum uint32 value. The mUniquePacketID field is read directly from the UDP wire-format packet header without bounds checking, causing the server to allocate one CacheItem per missing packet ID gap, exhausting available host memory and propagating an uncaught std::bad_alloc exception to std::terminate().