This mysql update to verson 5.5.52 fixes the following issues: Security issues fixed: - CVE-2016-3477: Fixed unspecified vulnerability in subcomponent parser . - CVE-2016-3521: Fixed unspecified vulnerability in subcomponent types . - CVE-2016-3615: Fixed unspecified vulnerability in subcomponent dml . - CVE-2016-5440: Fixed unspecified vulnerability in subcomponent rbr . - CVE-2016-6662: A malicious user with SQL and filesystem access could create a my.cnf in the datadir and , under certain circumstances, execute arbitrary code as mysql user