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[3.14] gh-159739: Propagate fallback getaddrinfo allocation failures (GH-159984) - #160100
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…ythonGH-159984) On builds using CPython's fallback `getaddrinfo()`, an allocation failure while constructing address results can return success with a null result, and the canonical-name path can ignore a helper error. `socket.getaddrinfo()` can then return an empty list, other callers can crash when they dereference the null result, and partially built address lists may leak. Set `EAI_MEMORY`, propagate helper errors, and keep the partial list available for cleanup. (cherry picked from commit 7c39e8f) Co-authored-by: Jelle Zijlstra <jelle@openai.com>
This was referenced Oct 21, 2026
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On builds using CPython's fallback getaddrinfo(), an allocation failure while constructing address results can return success with a null result, and the canonical-name path can ignore a helper error. socket.getaddrinfo() can then return an empty list, other callers can crash when they dereference the null result, and partially built address lists may leak. Set EAI_MEMORY, propagate helper errors, and keep the partial list available for cleanup.
(cherry picked from commit 7c39e8f)
Co-authored-by: Jelle Zijlstra jelle@openai.com