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* Dispatcher: added guard for packet payload size too large

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This commit is contained in:
Scott Powell
2025-03-08 19:38:36 +11:00
parent 115deda8e8
commit 2889867c4c
1 changed files with 9 additions and 3 deletions
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12
src/Dispatcher.cpp
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@@ -106,10 +106,16 @@ void Dispatcher::checkRecv() {
memcpy(pkt->path, &raw[i], pkt->path_len); i += pkt->path_len; memcpy(pkt->path, &raw[i], pkt->path_len); i += pkt->path_len;
pkt->payload_len = len - i; // payload is remainder pkt->payload_len = len - i; // payload is remainder
memcpy(pkt->payload, &raw[i], pkt->payload_len); if (pkt->payload_len > sizeof(pkt->payload)) {
MESH_DEBUG_PRINTLN("%s Dispatcher::checkRecv(): packet payload too big, payload_len=%d", getLogDateTime(), (uint32_t)pkt->payload_len);
_mgr->free(pkt); // put back into pool
pkt = NULL;
} else {
memcpy(pkt->payload, &raw[i], pkt->payload_len);
score = _radio->packetScore(_radio->getLastSNR(), len); score = _radio->packetScore(_radio->getLastSNR(), len);
air_time = _radio->getEstAirtimeFor(len); air_time = _radio->getEstAirtimeFor(len);
}
} }
} }
} else { } else {