CVE-2024-12254

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.