diff --git a/SECURITY.md b/SECURITY.md
index fb4d9005a..5092595e1 100644
--- a/SECURITY.md
+++ b/SECURITY.md
@@ -4,8 +4,8 @@
 
 | Firmware Version | Supported          |
 | ---------------- | ------------------ |
-| 2.5.x            | :white_check_mark: |
-| <= 2.4.x         | :x:                |
+| 2.6.x            | :white_check_mark: |
+| <= 2.5.x         | :x:                |
 
 ## Reporting a Vulnerability
 
diff --git a/src/modules/SerialModule.cpp b/src/modules/SerialModule.cpp
index e088b4612..8d280581c 100644
--- a/src/modules/SerialModule.cpp
+++ b/src/modules/SerialModule.cpp
@@ -513,7 +513,7 @@ void SerialModule::processWXSerial()
                     // Extract the current line
                     char line[meshtastic_Constants_DATA_PAYLOAD_LEN];
                     memset(line, '\0', sizeof(line));
-                    if (lineEnd - lineStart < sizeof(line) - 1) {
+                    if ((size_t)(lineEnd - lineStart) < sizeof(line) - 1) {
                         memcpy(line, &serialBytes[lineStart], lineEnd - lineStart);
 
                         ParsedLine parsed = parseLine(line);