From 1b107b2e025982dd2197ac8bbd6de03d712e2e51 Mon Sep 17 00:00:00 2001
From: Isaac Connor <isaac@zoneminder.com>
Date: Wed, 8 Jun 2022 16:45:13 -0400
Subject: [PATCH] Must memset the new allocation or we can use an unitialized
 value from the buffer

---
 src/zm_buffer.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/zm_buffer.cpp b/src/zm_buffer.cpp
index c65d8b24a..2365e1c39 100644
--- a/src/zm_buffer.cpp
+++ b/src/zm_buffer.cpp
@@ -54,6 +54,8 @@ unsigned int Buffer::expand(unsigned int count) {
     if ( mStorage ) {
       memcpy(newStorage, mHead, mSize);
       delete[] mStorage;
+    } else {
+      memset(newStorage, 0, mAllocation);
     }
     mStorage = newStorage;
     mHead = mStorage;