Fix wrong parameter in ICMPv4Checksum

SagerNet · Feb 10, 2025 · c8c2984 · c8c2984
1 parent 8cc5351
commit c8c2984
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/stack_system.go b/stack_system.go
@@ -586,7 +586,7 @@ func (s *System) processIPv4ICMP(ipHdr header.IPv4, icmpHdr header.ICMPv4) error
 	sourceAddress := ipHdr.SourceAddr()
 	ipHdr.SetSourceAddr(ipHdr.DestinationAddr())
 	ipHdr.SetDestinationAddr(sourceAddress)
-	icmpHdr.SetChecksum(header.ICMPv4Checksum(icmpHdr, checksum.Checksum(icmpHdr.Payload(), 0)))
+	icmpHdr.SetChecksum(header.ICMPv4Checksum(icmpHdr[:header.ICMPv4MinimumSize], checksum.Checksum(icmpHdr.Payload(), 0)))
 	ipHdr.SetChecksum(0)
 	ipHdr.SetChecksum(^ipHdr.CalculateChecksum())
 	return nil