From 85be003cf5d89c0e3e5e25eb64498c2cdfaa0bc2 Mon Sep 17 00:00:00 2001
From: Alexei Sorokin <sor.alexei@meowr.ru>
Date: Fri, 1 Nov 2019 08:29:52 +0300
Subject: [PATCH] [Embed][CORE] hex2bin should always get an even amount of
 symbols

---
 lib/media/mediafile.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/media/mediafile.php b/lib/media/mediafile.php
index 2eb77c08c6..ffcf1ed866 100644
--- a/lib/media/mediafile.php
+++ b/lib/media/mediafile.php
@@ -281,6 +281,8 @@ class MediaFile
             return false;
         } elseif ($ret === 0) {
             return null; // No match
+        } elseif (strlen($matches[2]) % 2 !== 0) {
+            return null; // An odd length won't do for hex2bin
         } else {
             $filename = hex2bin($matches[2]);