This update for mysql to version 5.5.59 fixes several issues. These security issues were fixed: - CVE-2018-2622: Vulnerability in the subcomponent: Server: DDL. Easily exploitable vulnerability allowed low privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash of MySQL Server - CVE-2018-2562: Vulnerability in the subcomponent: Server : Partition. Easily exploitable vulnerability allowed low privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash of MySQL Server as well as unauthorized update, insert or delete access to some of MySQL Server accessible data - CVE-2018-2640: Vulnerability in the subcomponent: Server: Optimizer. Easily exploitable vulnerability allowed low privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash of MySQL Server - CVE-2018-2665: Vulnerability in the subcomponent: Server: Optimizer. Easily exploitable vulnerability allowed low privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash of MySQL Server - CVE-2018-2668: Vulnerability in the subcomponent: Server: Optimizer. Easily exploitable vulnerability allowed low privileged attacker with network access via multiple protocols to compromise MySQL Server