Index: main/manager.c
===================================================================
--- main/manager.c	(revision 206378)
+++ main/manager.c	(working copy)
@@ -2885,6 +2885,8 @@
 				if (MAP_FAILED == (buf = mmap(NULL, l, PROT_READ | PROT_WRITE, MAP_PRIVATE, ss.fd, 0))) {
 					ast_log(LOG_WARNING, "mmap failed.  Manager request output was not processed\n");
 				} else {
+					/* ensure that string is null-terminated */
+					*buf++ = '\0';
 					char *tmpbuf;
 					if (format == FORMAT_XML)
 						tmpbuf = xml_translate(buf, params);