3385
MariaDBERRORNotableAccess ControlHIGH confidence
Circular role grant detected
Production Risk
Low — GRANT fails; no role relationship is created.
How to reproduce
trigger — this will error
trigger — this will error
GRANT role_b TO role_a; GRANT role_a TO role_b;
expected output
ERROR 3385 (HY000): Circular role grant detected.
Fix
Flatten role hierarchy to remove cycle
Flatten role hierarchy to remove cycle
REVOKE role_b FROM role_a; GRANT role_b TO 'user'@'localhost'; GRANT role_a TO 'user'@'localhost';
Why this works
Assigning both roles directly to the user avoids hierarchical cycles.
What not to do
✕
Sources
Official documentation ↗
MySQL 8.0 — 3385 ER_GRANT_ROLE_LOOP
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