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-2025-63235 [HIGH] – In sol commit 373d848 (2024-12-12), the broker does not fully release resources when handl

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In sol commit 373d848 (2024-12-12), the broker does not fully release resources when handling malformed or duplicate CONNECT packets. When clients send invalid CONNECT packets – either due to repeated attempts or failed authentication – the server may silently drop the connection or send a CONNACK but fail to close the session or deallocate internal resources. This behavior allows an attacker to create numerous half-open connections that consume memory and file descriptors indefinitely, potentially triggering the Linux OOM killer and causing a denial of service.