USN-4136-1 fixed a vulnerability in wpa_supplicant. This update provides the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.
Original advisory details:
It was discovered that wpa_supplicant incorrectly handled certain management frames. An attacker could possibly use this issue to cause a denial of service.
{ "availability": "No subscription required", "binaries": [ { "binary_version": "2.1-0ubuntu1.7+esm2", "binary_name": "wpagui" }, { "binary_version": "2.1-0ubuntu1.7+esm2", "binary_name": "wpasupplicant" }, { "binary_version": "2.1-0ubuntu1.7+esm2", "binary_name": "wpasupplicant-udeb" } ] }