From 11b84bc2b9c14f662dbb7b415ac2c170d51876df Mon Sep 17 00:00:00 2001
From: Philipp Jungkamp <philipp.jungkamp@rwth-aachen.de>
Date: Wed, 29 Jun 2022 20:24:23 +0000
Subject: [PATCH] Fix out of bounds vector access

---
 lib/nodes/iec60870.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/nodes/iec60870.cpp b/lib/nodes/iec60870.cpp
index 2e15c370c..868b0211f 100644
--- a/lib/nodes/iec60870.cpp
+++ b/lib/nodes/iec60870.cpp
@@ -514,7 +514,7 @@ int SlaveNode::_write(Sample *samples[], unsigned sample_count)
 
 		// update last_values
 		this->output.last_values_mutex.lock();
-		for (unsigned i = 0; i < sample->length; i++) {
+		for (unsigned i = 0; i < MIN(sample->length, this->output.last_values.size()); i++) {
 			this->output.last_values[i] = sample->data[i];
 		}
 		this->output.last_values_mutex.unlock();