Language: Java
Label: vulnerable
CWE: CWE-502 \u2014 Deserialization of Untrusted Data
The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid.

Code:
	public byte[] readByteArray() throws IOException {
		final int length = readInt();
		if (length == -1) {
			return null;
		}

		return readBytes(length);
	}