CFE-4687: Fixed off-by-one in protocol recv buffers (3.27)#6181
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nickanderson wants to merge 2 commits into
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CFE-4687: Fixed off-by-one in protocol recv buffers (3.27)#6181nickanderson wants to merge 2 commits into
nickanderson wants to merge 2 commits into
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ProtocolOpenDir()/ProtocolGet() receive up to CF_MSGSIZE bytes into a char buf[CF_MSGSIZE], but the receive primitives NUL-terminate at buf[received] where received can equal CF_MSGSIZE -- one past the array (TLSRecv/RecvSocketStream both write toget+1 bytes). Drives the real ProtocolOpenDir() over a classic-protocol socketpair with a record-filling reply. Aborts under AddressSanitizer on current code, passes once the buffers are sized CF_BUFSIZE (cfengine#6171). Ref: CFE-4687, cfengine#6171 Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> (cherry picked from commit a79b5ce)
(cherry picked from commit 2d5f4ae)
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