The EAP-pwd server and peer implementation in hostapd and wpa_supplicant 1.0 through 2.4 does not validate that a message is long enough to contain the Total-Length field, which allows remote attackers to cause a denial of service (crash) via a crafted message.
https://security.gentoo.org/glsa/201606-17
http://www.ubuntu.com/usn/USN-2650-1
http://www.openwall.com/lists/oss-security/2015/05/31/6
http://www.openwall.com/lists/oss-security/2015/05/09/6
http://www.debian.org/security/2015/dsa-3397
http://w1.fi/security/2015-4/eap-pwd-missing-payload-length-validation.txt
http://lists.opensuse.org/opensuse-updates/2015-06/msg00019.html