Index: CHANGES
===================================================================
--- CHANGES	(revision 1175992)
+++ CHANGES	(working copy)
@@ -1,8 +1,9 @@
                                                          -*- coding: utf-8 -*-
 Changes with Apache 2.2.22
 
+ *) Fix a regression introduced by the CVE-2011-3192 byterange fix in 2.2.20:
+    A range of '0-' returns a 206. [Jim Jagielski]
 
-
 Changes with Apache 2.2.21
 
   *) SECURITY: CVE-2011-3348 (cve.mitre.org)
Index: modules/http/byterange_filter.c
===================================================================
--- modules/http/byterange_filter.c	(revision 1175992)
+++ modules/http/byterange_filter.c	(working copy)
@@ -500,6 +500,20 @@
             }
             else {                  /* "5-" */
                 end = clength - 1;
+                /*
+                 * special case: 0-
+                 *   ignore all other ranges provided
+                 *   return as a single range: 0-
+                 */
+                if (start == 0) {
+                    apr_array_clear(*indexes);
+                    idx = (indexes_t *)apr_array_push(*indexes);
+                    idx->start = start;
+                    idx->end = end;
+                    sum_lengths = clength;
+                    num_ranges = 1;
+                    break;
+                }
             }
         }
 
@@ -526,7 +540,7 @@
         /* If all ranges are unsatisfiable, we should return 416 */
         return -1;
     }
-    if (sum_lengths >= clength) {
+    if (sum_lengths > clength) {
         ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
                       "Sum of ranges not smaller than file, ignoring.");
         return 0;