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SATWEI

Unbounded memory growth through TCP urgent data on non-Linux systems

Original on bitcoincore.org

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

SATWEI summary

Windows, macOS and BSD nodes could be crashed by a connected peer sending TCP urgent data, which slipped past paused reads in the select() backend and queued memory without limit (CVE-2026-117350). Linux nodes use poll() and are not affected. Bitcoin Core 32.1, 31.2, 30.4 and 29.5 fix the Medium-severity bug, which an LLM scan under Project Loupe found.

Tags

  • P2P

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