gh-143637: Fix re-entrant mutation of ancillary data in socket.sendmsg() #143892
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Hi, this PR fixes an internal correctness issue in socket.sendmsg(). |
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Fix a crash in socket.sendmsg() caused by re-entrant mutation of ancillary data during argument parsing.
Hold a strong reference to each ancillary item while parsing to avoid use-after-free, and added a regression test.
socket.sendmsgancillary parser after re-entrant__index__clears the control list #143637