From de9d3bfb6519691c72d87259f1ab7ef4ea5846e6 Mon Sep 17 00:00:00 2001
From: Toby Chui <tobychui@users.noreply.github.com>
Date: Sun, 16 Feb 2025 21:10:56 +0800
Subject: [PATCH] Fixed netstat underflow bug

- Fixed netstat sometime underflow to a large negative number bug
---
 src/mod/netstat/netstat.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/mod/netstat/netstat.go b/src/mod/netstat/netstat.go
index 078c1f6..67724c1 100644
--- a/src/mod/netstat/netstat.go
+++ b/src/mod/netstat/netstat.go
@@ -212,6 +212,10 @@ func (n *NetStatBuffers) GetNetworkInterfaceStats() (int64, int64, error) {
 		totalTx += counter.BytesSent
 	}
 
-	// Convert bytes to bits
+	// Convert bytes to bits with overflow check
+	const maxInt64 = int64(^uint64(0) >> 1)
+	if totalRx*8 > uint64(maxInt64) || totalTx*8 > uint64(maxInt64) {
+		return 0, 0, errors.New("overflow detected when converting uint64 to int64")
+	}
 	return int64(totalRx * 8), int64(totalTx * 8), nil
 }