File 0001-Patch-2.1-Fixes-heap-buffer-overflow-in-osip_body_to_s.patch of Package libosip2

--- src/osipparser2/osip_body_orig.c	2016-09-02 20:23:00.014265482 +0000
+++ src/osipparser2/osip_body.c	2016-09-02 20:34:39.606291823 +0000
@@ -378,7 +378,7 @@
       osip_free (ptr);
       return i;
     }
-    if (length < tmp_body - ptr + strlen (tmp) + 4) {
+    if (length <= tmp_body - ptr + strlen (tmp) + 4) {
       size_t len;
 
       len = tmp_body - ptr;
@@ -417,9 +417,18 @@
   }
 
   if ((osip_list_size (body->headers) > 0) || (body->content_type != NULL)) {
+    if (length <= tmp_body - ptr + 2) {
+      size_t len;
+
+      len = tmp_body - ptr;
+      length = length + 2;
+      ptr = osip_realloc (ptr, length);
+      tmp_body = ptr + len;
+    }
     tmp_body = osip_strn_append (tmp_body, CRLF, 2);
   }
-  if (length < tmp_body - ptr + body->length + 4) {
+
+  if (length <= tmp_body - ptr + body->length + 4) {
     size_t len;
 
     len = tmp_body - ptr;