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SATWEI

Slow unbounded memory growth on paused pre-BIP31 peers

Original on bitcoincore.org

Source
Bitcoin Corebitcoincore.org
Originally published
Original length
2 min read
Language
English

SATWEI summary

By pretending not to support BIP 31 pings, a malicious peer could dodge the 20-minute disconnect and read slowly, swelling a node's send queue by up to 2MB per hour for each inbound peer and 5MB for each outbound one. CVE-2026-117349, rated Medium, is fixed by #36667 in Bitcoin Core 32.1, 31.2, 30.4 and 29.5; -blocksonly nodes were much less exposed.

Tags

  • P2P

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