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-rw-r--r--isisd/isis_te.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/isisd/isis_te.c b/isisd/isis_te.c
index b6321dbac..a550d5938 100644
--- a/isisd/isis_te.c
+++ b/isisd/isis_te.c
@@ -172,6 +172,10 @@ void isis_link_params_update_asla(struct isis_circuit *circuit,
struct isis_ext_subtlvs *ext = circuit->ext;
int i;
+ if (!ext)
+ /* no extended subTLVs - nothing to update */
+ return;
+
if (!HAS_LINK_PARAMS(ifp)) {
list_delete_all_node(ext->aslas);
return;