Ubuntu Security Notice 4488-2 - USN-4488-1 fixed several vulnerabilities in X.Org. This update provides the corresponding update and also the update from USN-4490-1 for Ubuntu 14.04 ESM. Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled the input extension protocol. A local attacker could possibly use this issue to escalate privileges. Jan-Niklas Sohn discovered that the X.Org X Server incorrectly initialized memory. A local attacker could possibly use this issue to obtain sensitive information. Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled the XkbSelectEvents function. A local attacker could possibly use this issue to escalate privileges. Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled the XRecordRegisterClients function. A local attacker could possibly use this issue to escalate privileges.
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