[RPC] Fix createrawtx sequence number unsigned int parsing

1 files changed, 7 insertions, 2 deletions

diff --git a/src/rpc/rawtransaction.cpp b/src/rpc/rawtransaction.cpp
index 992914f88c..9723e394d6 100644
--- a/src/rpc/rawtransaction.cpp
+++ b/src/rpc/rawtransaction.cpp
@@ -388,8 +388,13 @@ UniValue createrawtransaction(const UniValue& params, bool fHelp)
 
         // set the sequence number if passed in the parameters object
         const UniValue& sequenceObj = find_value(o, "sequence");
-        if (sequenceObj.isNum())
-            nSequence = sequenceObj.get_int();
+        if (sequenceObj.isNum()) {
+            int64_t seqNr64 = sequenceObj.get_int64();
+            if (seqNr64 < 0 || seqNr64 > std::numeric_limits<uint32_t>::max())
+                throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, sequence number is out of range");
+            else
+                nSequence = (uint32_t)seqNr64;
+        }
 
         CTxIn in(COutPoint(txid, nOutput), CScript(), nSequence);