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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 d61a0ec7bf..dce58bf8bf 100644
--- a/source3/auth/auth_builtin.c
+++ b/source3/auth/auth_builtin.c
@@ -103,7 +103,9 @@ static NTSTATUS check_name_to_ntstatus_security(const struct auth_context *auth_
return nt_status_string_to_code(user);
}
- strlower_m(user);
+ if (!strlower_m(user)) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
error_num = strtoul(user, NULL, 16);
DEBUG(5,("check_name_to_ntstatus_security: Error for user %s was %lx\n", user, error_num));