CVE-2026-3298 | 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.
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.
- 🔗 github.com/python/cpython/pull/148809
- 🔗 github.com/python/cpython/issues/148808
- 🔗 mail.python.org/archives/list/[email protected]…
- 🔗 github.com/python/cpython/commit/1274766d3c29007ab77…
- 🔗 github.com/python/cpython/commit/27522b7d6e6588f03e6…
- 🔗 github.com/python/cpython/commit/95633d2aad4721e25e4…
- 🔗 github.com/python/cpython/commit/6c8b85b3f1d83d5697e…
- 🔗 github.com/python/cpython/commit/f5ca38739241fe7a40a…
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CVE-2026-3298 | 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.
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