v.25.1Backward Incompatible Changes
CHECK TABLE Queries Now Require Separate CHECK Grant to Prevent DoS Vulnerabilities
CHECK TABLEqueries now require a separate,CHECKgrant. In previous versions, it was enough to haveSHOW TABLESgrant to run these queries. But aCHECK TABLEquery can be heavy, and usual query complexity limits forSELECTqueries don't apply to it. It led to the potential of DoS. #74471 (Alexey Milovidov).