add size check to chunk datalen

2026-08-12 19:03:50 +00:00 · 2026-05-20 17:44:01 -05:00
parent 145c13a976
commit 2df4cd56f7
1 changed files with 4 additions and 0 deletions
@@ -30,6 +30,10 @@ func DecodeChunk(bytes []byte) (chunks.Chunk, error) {
 		HasSubchunks: has_subchunks,
 	}

+	if len(bytes) < 4+int(header.DataLen) {
+		return chunks.Chunk{}, errors.New("chunk data length is greater than the number of bytes")
+	}
+
 	chunk_data := bytes[4 : 4+header.DataLen]

 	return chunks.Chunk{