Prevent integer overflow

2020-10-06 10:52:23 +02:00
parent 3b479c3235
commit fd9130d7df
1 changed files with 4 additions and 0 deletions
--- a/x/wasm/internal/keeper/keeper.go
+++ b/x/wasm/internal/keeper/keeper.go
@@ -566,6 +566,10 @@ func (k Keeper) dispatchMessages(ctx sdk.Context, contractAddr sdk.AccAddress, m

 func gasForContract(ctx sdk.Context) uint64 {
 	meter := ctx.GasMeter()
+	// avoid integer overflow
+	if meter.IsOutOfGas() {
+		return 0
+	}
 	remaining := (meter.Limit() - meter.GasConsumed()) * GasMultiplier
 	if remaining > MaxGas {
 		return MaxGas