diff -Nru vino-3.22.0/debian/changelog vino-3.22.0/debian/changelog
--- vino-3.22.0/debian/changelog	2020-10-06 14:33:38.000000000 +0000
+++ vino-3.22.0/debian/changelog	2020-11-16 14:50:06.000000000 +0000
@@ -1,3 +1,12 @@
+vino (3.22.0-5ubuntu2.2) focal-security; urgency=medium
+
+  * SECURITY UPDATE: Denial of service
+    - debian/patches/CVE-2020-25708.patch: fix possible divide-by-zero in
+      server/libvncserver/rfbserver.c.
+    - CVE-2020-25708
+
+ -- Leonidas S. Barbosa <leo.barbosa@canonical.com>  Mon, 16 Nov 2020 11:50:06 -0300
+
 vino (3.22.0-5ubuntu2.1) focal-security; urgency=medium
 
   * SECURITY UPDATE: DoS via unchecked malloc
diff -Nru vino-3.22.0/debian/patches/CVE-2020-25708.patch vino-3.22.0/debian/patches/CVE-2020-25708.patch
--- vino-3.22.0/debian/patches/CVE-2020-25708.patch	1970-01-01 00:00:00.000000000 +0000
+++ vino-3.22.0/debian/patches/CVE-2020-25708.patch	2020-11-16 14:50:00.000000000 +0000
@@ -0,0 +1,20 @@
+From 673c07a75ed844d74676f3ccdcfdc706a7052dba Mon Sep 17 00:00:00 2001
+From: Christian Beier <dontmind@freeshell.org>
+Date: Sun, 17 May 2020 13:47:21 +0200
+Subject: [PATCH] libvncserver/rfbserver: fix possible divide-by-zero
+
+Closes #409
+Index: vino-3.22.0/server/libvncserver/rfbserver.c
+===================================================================
+--- vino-3.22.0.orig/server/libvncserver/rfbserver.c
++++ vino-3.22.0/server/libvncserver/rfbserver.c
+@@ -1341,6 +1341,9 @@ rfbSendRectEncodingRaw(rfbClientPtr cl,
+     char *fbptr = (cl->screen->frameBuffer + (cl->screen->paddedWidthInBytes * y)
+                    + (x * (cl->screen->bitsPerPixel / 8)));
+ 
++    if(!h || !w)
++	return TRUE; /* nothing to send */
++
+     /* Flush the buffer to guarantee correct alignment for translateFn(). */
+     if (cl->ublen > 0) {
+         if (!rfbSendUpdateBuf(cl))
diff -Nru vino-3.22.0/debian/patches/series vino-3.22.0/debian/patches/series
--- vino-3.22.0/debian/patches/series	2020-10-06 14:32:43.000000000 +0000
+++ vino-3.22.0/debian/patches/series	2020-11-16 14:49:54.000000000 +0000
@@ -14,3 +14,4 @@
 CVE-2019-15681.patch
 CVE-2020-14397.patch
 CVE-2020-1440x.patch
+CVE-2020-25708.patch