CVE-2024-12254

CVE-2024-12254 · Unbounded memory buffering in SelectorSocketTransport.writelines()

Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.

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 · Élevée · EPSS 1,9% · Correctif disponible

Publication

2024-12-06T15:19:41.576Z

Mise à jour

2026-07-31T14:08:25.397Z

Pile logicielle: system · python

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