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ALPINE-CVE-2024-12254

ALPINE-CVE-2024-12254 PUBLISHED CVSS 8.699999809265137 HIGH

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.

Risk Scores

CVSS v4.0
8.699999809265137
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected Products

VendorProductVersions
Alpine:v3.22python33.10.0-r0, 3.10.1-r0, 3.10.2-r0
Alpine:v3.21python33.6.2-r0, 3.10.0-r0, 3.10.0-r1
Alpine:v3.20python33.6.8-r1, 0, 3.1.3-r0
Alpine:v3.23python30, 3.10.2-r0, 3.10.0-r1

Timeline

  • Dec 6, 2024 CVE Published
  • Dec 3, 2025 CVE Updated
  • Apr 30, 2026 Distribution Patch
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