From a514ac486a70018ac3d7dba6015f1d3539cb53b9 Mon Sep 17 00:00:00 2001 From: Philippe Guibert Date: Thu, 31 Mar 2022 11:18:45 +0200 Subject: [PATCH] isisd: prevent from accessing a non initialised pointer When using bfd on a single level, one may access a null pointer list. Prevent from using it. Signed-off-by: Philippe Guibert --- isisd/isis_bfd.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/isisd/isis_bfd.c b/isisd/isis_bfd.c index 1f50fb9342..5311a384e7 100644 --- a/isisd/isis_bfd.c +++ b/isisd/isis_bfd.c @@ -168,6 +168,8 @@ void isis_bfd_circuit_cmd(struct isis_circuit *circuit) struct listnode *node; struct isis_adjacency *adj; + if (!adjdb) + continue; for (ALL_LIST_ELEMENTS_RO(adjdb, node, adj)) bfd_adj_cmd(adj); }