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CVE-2026-3298 The method "sock_recvfrom_into()" of "asyncio.ProacterEventLoop" (Windows only) was missing a boundary check for the…

Description

The method "sock_recvfrom_into()" of "asyncio.ProacterEventLoop" (Windows only) was missing a boundary check for the data buffer when using nbytes parameter. This allowed for an out-of-bounds buffer write if data was larger than the buffer size. Non-Windows platforms are not affected.

Produits et versions touchés

Produit Versions touchées Corrigé en
CPython 3.15 3.15.0a1 → < 3.15.0b1 3.15.0b1
CPython 3.14 3.14.0a1 → < 3.14.5rc1 3.14.5rc1
CPython 3.13 3.13.0 → < 3.13.14 3.13.14
CPython 3.12 3.12.0 → < 3.12.14 3.12.14
CPython 3.11 premières → < 3.11.16 3.11.16

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