rdma/sys.c: fix possible out-of-bound array access

netns_modes_str[] array has 2 elements, when netns_mode is 2,
condition (2 <= 2) will be true and `mode_str = netns_modes_str[2]'
will be executed, which will result in out-of-bound read.

Signed-off-by: Michał Łyszczek <michal.lyszczek@bofc.pl>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>

diff --git a/rdma/sys.c b/rdma/sys.c
index cef39081872c61071d7baa61798f4491df672dc8..1a434a25b7af2bb7d933767d2588fa1e7b5af066 100644 (file)
--- a/rdma/sys.c
+++ b/rdma/sys.c
@@ -31,7 +31,7 @@ static int sys_show_parse_cb(const struct nlmsghdr *nlh, void *data)
                netns_mode =
                        mnl_attr_get_u8(tb[RDMA_NLDEV_SYS_ATTR_NETNS_MODE]);
 
-               if (netns_mode <= ARRAY_SIZE(netns_modes_str))
+               if (netns_mode < ARRAY_SIZE(netns_modes_str))
                        mode_str = netns_modes_str[netns_mode];
                else
                        mode_str = "unknown";