[KAFKA-13304] Implicit cast of source type long to narrower destination type int in org.apache.kafka.common.network.MultiSend.java

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.8.0
• Component/s: network
• Assignee: Unassigned
• Reporter: Thomas Bachmann
• Created: 15/Sep/21 14:14
• Updated: 15/Sep/21 14:14

Description

During a security review of Kafka I came across this bug https://lgtm.com/projects/g/apache/kafka/rev/78ba492e3e70fd9db61bc82469371d04a8d6b762/files/clients/src/main/java/org/apache/kafka/common/network/MultiSend.java?sort=name&dir=ASC&mode=heatmap#x9c1b5901406741c6:1

    @Override74    public long writeTo(GatheringByteChannel channel) throws IOException {75        if (completed())76            throw new KafkaException("This operation cannot be completed on a complete request.");7778        int totalWrittenPerCall = 0;79        boolean sendComplete = false;80        do {81            long written = current.writeTo(channel);82            totalWritten += written;83            totalWrittenPerCall += written;

"Implicit cast of source type long to narrower destination type int."