Merge pull request FRRouting#16668 from FRRouting/mergify/bp/stable/1…

…0.0/pr-16665 isisd: fix crash at flex-algo without mpls-te (backport FRRouting#16665)
donaldsharp · Aug 28, 2024 · 3bf73b8 · 3bf73b8
2 parents fc7cf27 + ae8b6b2
commit 3bf73b8
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/isisd/isis_te.c b/isisd/isis_te.c
@@ -172,6 +172,10 @@ static 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;