rib: default distance value for new protocols (v2)
adding protocols and forgetting to update zebra_rib.c currently causes
a beyond end of array access for the default distance value. fix by
making 150 the default distance for unknown routing protocols.
150 is higher than all other IGPs but lower than iBGP (200)
diff --git a/zebra/zebra_rib.c b/zebra/zebra_rib.c
index 12f3fa5..8228350 100644
--- a/zebra/zebra_rib.c
+++ b/zebra/zebra_rib.c
@@ -67,6 +67,7 @@
{ZEBRA_ROUTE_OSPF6, 110},
{ZEBRA_ROUTE_ISIS, 115},
{ZEBRA_ROUTE_BGP, 20 /* IBGP is 200. */}
+ /* no entry/default: 150 */
};
/* Vector for routing table. */
@@ -1511,7 +1512,10 @@
/* Set default distance by route type. */
if (distance == 0)
{
- distance = route_info[type].distance;
+ if ((unsigned)type >= sizeof(route_info) / sizeof(route_info[0]))
+ distance = 150;
+ else
+ distance = route_info[type].distance;
/* iBGP distance is 200. */
if (type == ZEBRA_ROUTE_BGP && CHECK_FLAG (flags, ZEBRA_FLAG_IBGP))