From 4d714cf9a4aa89a41461a5e4d2c50afe3a0ae0f6 Mon Sep 17 00:00:00 2001
From: ulrich <u.martiensen@umartiensen.de>
Date: Wed, 9 Feb 2022 23:08:42 +0100
Subject: [PATCH] Fixed buffer overflow in HA autodiscovery. #2538

---
 usermods/multi_relay/usermod_multi_relay.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/usermods/multi_relay/usermod_multi_relay.h b/usermods/multi_relay/usermod_multi_relay.h
index 23dcc1e2..6143a6b9 100644
--- a/usermods/multi_relay/usermod_multi_relay.h
+++ b/usermods/multi_relay/usermod_multi_relay.h
@@ -272,7 +272,7 @@ class MultiRelay : public Usermod {
 
     void publishHomeAssistantAutodiscovery() {
       for (uint8_t i = 0; i < MULTI_RELAY_MAX_RELAYS; i++) {
-        char uid[16], json_str[1024], buf[128];
+        char uid[24], json_str[1024], buf[128];
         size_t payload_size;
         sprintf_P(uid, PSTR("%s_sw%d"), escapedMac.c_str(), i);