make sure invalid data won't allocate too much memory

src/main/java/ru/r2cloud/jradio/ccsds/TransferFrameSecondaryHeader.java

@@ -18,6 +18,9 @@ public TransferFrameSecondaryHeader() {
 	public TransferFrameSecondaryHeader(BitInputStream bis) throws IOException {
 		version = bis.readUnsignedInt(2);
 		length = bis.readUnsignedInt(6);
+		if (length > bis.available()) {
+			throw new IOException("invalid length: " + length);
+		}
 		payload = new byte[length];
 		bis.readFully(payload);
 	}

src/main/java/ru/r2cloud/jradio/eirsat/EirsatBeacon.java

@@ -16,6 +16,9 @@ public class EirsatBeacon extends TransferFrame {
 	@Override
 	public void readBeacon(DataInputStream dis) throws IOException, UncorrectableException {
 		if (getHeader().getFieldStatus().getFirstHeaderPointer() != 0) {
+			if (getHeader().getFieldStatus().getFirstHeaderPointer() > dis.available()) {
+				throw new UncorrectableException("invalid header offset: " + getHeader().getFieldStatus().getFirstHeaderPointer());
+			}
 			byte[] payload = new byte[getHeader().getFieldStatus().getFirstHeaderPointer()];
 			dis.readFully(payload);
 			Packet partial = new Packet();

src/main/java/ru/r2cloud/jradio/netsat/NetSatBeacon.java

@@ -43,6 +43,9 @@ public void readBeacon(byte[] data) throws IOException, UncorrectableException {
 		if (compassHeader.getPayloadSize() == 53) {
 			modelPacket = new ModelPacket(ldis);
 		} else {
+			if (compassHeader.getPayloadSize() > ldis.available()) {
+				throw new UncorrectableException("invalid header size: " + compassHeader.getPayloadSize());
+			}
 			unknownPayload = new byte[compassHeader.getPayloadSize()];
 			ldis.readFully(unknownPayload);
 		}