From c01b2bf7a04a1ab153207b5d1b87ab5f6cb4e020 Mon Sep 17 00:00:00 2001
From: RSDuck <RSDuck@users.noreply.github.com>
Date: Mon, 18 Nov 2024 18:58:14 +0100
Subject: [PATCH] prevent out of bounds access for microphone data

---
 src/frontend/qt_sdl/EmuInstanceAudio.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/frontend/qt_sdl/EmuInstanceAudio.cpp b/src/frontend/qt_sdl/EmuInstanceAudio.cpp
index 4952d090..a4ac9394 100644
--- a/src/frontend/qt_sdl/EmuInstanceAudio.cpp
+++ b/src/frontend/qt_sdl/EmuInstanceAudio.cpp
@@ -330,7 +330,11 @@ void EmuInstance::micProcess()
                     micBufferReadPos += len;
                 }
 
-                if (len < kFrameLen)
+                if (len == 0)
+                {
+                    memset(tmp, 0, sizeof(tmp));
+                }
+                else if (len < kFrameLen)
                 {
                     for (int i = len; i < kFrameLen; i++)
                         tmp[i] = tmp[len-1];