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-rw-r--r--source4/rpc_server/drsuapi/writespn.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/source4/rpc_server/drsuapi/writespn.c b/source4/rpc_server/drsuapi/writespn.c
index e2e12f1689c..63fdef21f59 100644
--- a/source4/rpc_server/drsuapi/writespn.c
+++ b/source4/rpc_server/drsuapi/writespn.c
@@ -59,6 +59,12 @@ static bool writespn_check_spn(struct drsuapi_bind_state *b_state,
krb5_principal principal;
const char *dns_name, *dnsHostName;
+ /* The service principal name shouldn't be NULL */
+ if (spn == NULL) {
+ talloc_free(tmp_ctx);
+ return false;
+ }
+
/*
get the objectSid of the DN that is being modified, and
check it matches the user_sid in their token