Red Hat Security Advisory 2016-2131-01 – MariaDB is a multi-user, multi-threaded SQL database server. For all practical purposes, MariaDB is binary-compatible with MySQL. The following packages have been upgraded to a newer upstream version: mariadb55-mariadb. Security Fix: It was discovered that the MariaDB logging functionality allowed writing to MariaDB configuration files. An administrative database user, or a database user with FILE privileges, could possibly use this flaw to run arbitrary commands with root privileges on the system running the database server.

Red Hat Security Advisory 2016-2130-01 – MySQL is a multi-user, multi-threaded SQL database server. It consists of the MySQL server daemon, mysqld, and many client programs. The following packages have been upgraded to a newer upstream version: mysql55-mysql. Security Fix: It was discovered that the MySQL logging functionality allowed writing to MySQL configuration files. An administrative database user, or a database user with FILE privileges, could possibly use this flaw to run arbitrary commands with root privileges on the system running the database server.

Red Hat Security Advisory 2016-2128-01 – The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: A flaw was found in the Linux kernel’s keyring handling code: the key_reject_and_link() function could be forced to free an arbitrary memory block. An attacker could use this flaw to trigger a use-after-free condition on the system, potentially allowing for privilege escalation.

Red Hat Security Advisory 2016-2127-01 – The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: A race condition was found in the way the Linux kernel’s memory subsystem handled the copy-on-write breakage of private read-only memory mappings. An unprivileged, local user could use this flaw to gain write access to otherwise read-only memory mappings and thus increase their privileges on the system.

Red Hat Security Advisory 2016-2126-01 – The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: A race condition was found in the way the Linux kernel’s memory subsystem handled the copy-on-write breakage of private read-only memory mappings. An unprivileged, local user could use this flaw to gain write access to otherwise read-only memory mappings and thus increase their privileges on the system.