Bug report

Bug description:

Summary

Two leak bugs insocketmodule.c triggered whenPySys_Audit raises:

1. getaddrinfo (line 6983):idna and/orpstr refs leaked when audit hook raises. ~657 objects leaked per 1000 calls.
2. sock_sendto (line 4810):pbuf Py_buffer not released when audit hook raises.

Reproducer (getaddrinfo leak)

importsocket,syssys.addaudithook(lambda*a: (_for_in ()).throw(RuntimeError("audit")))before=sys.gettotalrefcount()foriinrange(1000):try:socket.getaddrinfo("localhost",80)exceptRuntimeError:passafter=sys.gettotalrefcount()print(f"Leaked{after-before} objects in 1000 calls")

CPython versions tested on:

CPython main branch

Operating systems tested on:

No response

Linked PRs

• gh-146245: Fix ref/buffer leaks in socketmodule.c on audit hook failure #146247
• gh-146245: Fix reference and buffer leaks via audit hook in socket module #146248
• [3.14] gh-146245: Fix reference and buffer leaks via audit hook in socket module (GH-146248) #146274
• [3.13] gh-146245: Fix reference and buffer leaks via audit hook in socket module (GH-146248) #146275