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-rw-r--r--source3/auth/auth_builtin.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/source3/auth/auth_builtin.c b/source3/auth/auth_builtin.c
index b757894a7c..d61a0ec7bf 100644
--- a/source3/auth/auth_builtin.c
+++ b/source3/auth/auth_builtin.c
@@ -97,7 +97,9 @@ static NTSTATUS check_name_to_ntstatus_security(const struct auth_context *auth_
fstrcpy(user, user_info->client.account_name);
if (strnequal("NT_STATUS", user, strlen("NT_STATUS"))) {
- strupper_m(user);
+ if (!strupper_m(user)) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
return nt_status_string_to_code(user);
}