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  1. MariaDB Server
  2. MDEV-29633

Grants on 10.5+ server with pre-10.4 schema are silently ignored

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      If 10.5+ (i.e. a server with new privileges added in 10.5) is started on 10.3 or earlier datadir, and before mysql_upgrade is run, ACL statements are executed, then those which grant new privileges seemingly succeed but don't do anything. I suppose it has something to do with non-existing mysql.global_priv, and the old mysql.user not containing columns for the new privileges, but I would expect an error.

      10.5 fb70bb44d0

      MariaDB [test]> create user u;
      Query OK, 0 rows affected (0.001 sec)
       
      MariaDB [test]> grant read_only admin on *.* to u;
      Query OK, 0 rows affected (0.000 sec)
       
      MariaDB [test]> show grants for u;
      +-------------------------------+
      | Grants for u@%                |
      +-------------------------------+
      | GRANT USAGE ON *.* TO `u`@`%` |
      +-------------------------------+
      1 row in set (0.000 sec)
      

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            serg Sergei Golubchik
            elenst Elena Stepanova
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