From: Serge Hallyn <serge@hallyn.com>
Date: Fri, 5 Aug 2016 22:16:48 +0000 (-0500)
Subject: also check upper for wrap
X-Git-Tag: 4.3.1~2
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=94da3dc5c853e386a70ce45aeaafb1d61f55fe23;p=shadow

also check upper for wrap
---

diff --git a/libmisc/idmapping.c b/libmisc/idmapping.c
index f105a412..625a07a0 100644
--- a/libmisc/idmapping.c
+++ b/libmisc/idmapping.c
@@ -89,7 +89,8 @@ struct map_range *get_map_ranges(int ranges, int argc, char **argv)
 			free(mappings);
 			return NULL;
 		}
-		if (mapping->lower + mapping->count < mapping->lower) {
+		if (mapping->lower + mapping->count < mapping->lower ||
+				mapping->upper + mapping->count < mapping->upper) {
 			free(mapping);
 			return NULL;
 		}