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Merge pull request #4011 from bluca/fuzzers

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Problem: use-after-free in WS
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Doron Somech 2020-08-15 17:06:58 +03:00 committed by GitHub
commit d280c44fe0
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1 changed files with 8 additions and 2 deletions
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10
src/stream_engine_base.cpp
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@ -344,8 +344,14 @@ void zmq::stream_engine_base_t::out_event ()
_outsize = _encoder->encode (&_outpos, 0);
while (_outsize < static_cast<size_t> (_options.out_batch_size)) {
if ((this->*_next_msg) (&_tx_msg) == -1)
break;
if ((this->*_next_msg) (&_tx_msg) == -1) {
// ws_engine can cause an engine error and delete it, so
// bail out immediately to avoid use-after-free
if (errno == ECONNRESET)
return;
else
break;
}
_encoder->load_msg (&_tx_msg);
unsigned char *bufptr = _outpos + _outsize;
const size_t n =