ALPINE-CVE-2024-12254

ALPINE-CVE-2024-12254

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Starting in Python 3.12.0, the asyncio._SelectorSocketTransport.writelines() method would not "pause" writing and signal to the Protocol to drain the buffer to the wire once the write buffer reached the "high-water mark". Because of this, Protocols would not periodically drain the write buffer potentially leading to memory exhaustion. This vulnerability likely impacts a small number of users, you must be using Python 3.12.0 or later, on macOS or Linux, using the asyncio module with protocols, and using .writelines() method which had new zero-copy-on-write behavior in Python 3.12.0 and later. If not all of these factors are true then your usage of Python is unaffected.

CVSS 8.7 · High · Fix available

Published

2024-12-06T16:15:20.623Z

Updated

2026-09-15T08:17:48.437353409Z

Stack: system

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