From da5b063420b23c3bc50faf82a49a81b6ee3b3e30 Mon Sep 17 00:00:00 2001
From: orignal <i2porignal@yandex.ru>
Date: Tue, 28 Jul 2026 22:09:03 -0400
Subject: [PATCH] fixed possible overflow with negative value

---
 libi2pd/Streaming.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libi2pd/Streaming.cpp b/libi2pd/Streaming.cpp
index 5608e1fd..b50439bb 100644
--- a/libi2pd/Streaming.cpp
+++ b/libi2pd/Streaming.cpp
@@ -1173,7 +1173,7 @@ namespace stream
 		if (m_LastACKSendTime)
 			passedTime = (ts - m_LastACKSendTime)*1000; // in microseconds
 		numPackets = (passedTime + m_PacketACKIntervalRem) / m_PacketACKInterval;
-		int64_t delta = numPackets * m_PacketACKInterval - passedTime;
+		int64_t delta = numPackets * (int64_t)m_PacketACKInterval - passedTime;
 		if (delta < (int64_t)m_PacketACKIntervalRem)
 			m_PacketACKIntervalRem -= delta;
 		else