Bitcoin Core Fixes Memory Exhaustion Bug That Could Crash Windows and Mac Nodes

TL;DR Bitcoin Core fixed a Medium-severity memory exhaustion flaw that let malicious peers crash Windows, macOS and BSD nodes, while Linux remained unaffected. Patched versions 29.5, 30.4, 31.2 and 32.1 were released across maintained branches after the vulnerability was identified through Project Loupe’s automated LLM scan. The bug affected node availability rather than Bitcoin consensus or fund ownership, and operators on platforms should move to patched releases to remove exposure. Bitcoin Core released fixes for a memory exhaustion vulnerability that could let a malicious peer remotely crash nodes running on Windows, macOS or BSD. In an official security advisory , the project said affected systems use a select() -based socket backend that could queue data without limit.

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