Better enforce reslist limits.

Values cannot be negative and hmax must not be zero.

git-svn-id: http://svn.apache.org/repos/asf/apr/apr-util/trunk@680511 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 2 insertions, 1 deletions

diff --git a/misc/apr_reslist.c b/misc/apr_reslist.c
index 1c571d41..a3a68a59 100644
--- a/misc/apr_reslist.c
+++ b/misc/apr_reslist.c
@@ -245,7 +245,8 @@ APU_DECLARE(apr_status_t) apr_reslist_create(apr_reslist_t **reslist,
 
     /* Do some sanity checks so we don't thrash around in the
      * maintenance routine later. */
-    if (min > smax || min > hmax || smax > hmax || ttl < 0) {
+    if (min < 0 || min > smax || min > hmax || smax > hmax || hmax == 0 ||
+        ttl < 0) {
         return APR_EINVAL;
     }