A vulnerability in the 802.11 Generic Advertisement Service (GAS) frame processing function of Cisco Wireless LAN Controller (WLC) Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) The vulnerability affects Cisco devices if they are running a vulnerable release of Cisco WLC Software and have at least one WLAN with the HotSpot2.0 feature enabled. Only products listed in the Vulnerable Products section of this advisory are known to be affected.”]
Source: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wlc-gas-dos-8FsE3AWH