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Amazon Linux 2023: CVE-2024-12254: Important priority package update for python3.12

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Amazon Linux 2023: CVE-2024-12254: Important priority package update for python3.12

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
12/06/2024
Created
02/05/2025
Added
02/14/2025
Modified
02/14/2025

Description

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.

Solution(s)

  • amazon-linux-2023-upgrade-python3-12
  • amazon-linux-2023-upgrade-python3-12-debug
  • amazon-linux-2023-upgrade-python3-12-debuginfo
  • amazon-linux-2023-upgrade-python3-12-debugsource
  • amazon-linux-2023-upgrade-python3-12-devel
  • amazon-linux-2023-upgrade-python3-12-idle
  • amazon-linux-2023-upgrade-python3-12-libs
  • amazon-linux-2023-upgrade-python3-12-test
  • amazon-linux-2023-upgrade-python3-12-tkinter

References

  • https://attackerkb.com/topics/cve-2024-12254
  • CVE - 2024-12254
  • https://alas.aws.amazon.com/AL2023/ALAS-2025-808.html
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