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authorDan Carpenter <dan.carpenter@oracle.com>2019-06-07 18:31:07 +0300
committerDavid S. Miller <davem@davemloft.net>2019-06-09 13:37:25 -0700
commit5270041d342de6f1e6a3b6634c1ceaa67d1f87ea (patch)
treee822fa9d52aa7e6251996af9974b0b20f3b106da
parent90b8b7e755db648de7f1d17e3729dd7154a046a0 (diff)
nexthop: off by one in nexthop_mpath_select()
The nhg->nh_entries[] array is allocated in nexthop_grp_alloc() and it has nhg->num_nh elements so this check should be >= instead of >. Fixes: 430a049190de ("nexthop: Add support for nexthop groups") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--include/net/nexthop.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/nexthop.h b/include/net/nexthop.h
index aff7b2410057..e019ed9b3dc3 100644
--- a/include/net/nexthop.h
+++ b/include/net/nexthop.h
@@ -160,7 +160,7 @@ struct nexthop *nexthop_mpath_select(const struct nexthop *nh, int nhsel)
/* for_nexthops macros in fib_semantics.c grabs a pointer to
* the nexthop before checking nhsel
*/
- if (nhsel > nhg->num_nh)
+ if (nhsel >= nhg->num_nh)
return NULL;
return nhg->nh_entries[nhsel].nh;