{"id":"UBUNTU-CVE-2015-4146","details":"The EAP-pwd peer implementation in hostapd and wpa_supplicant 1.0 through 2.4 does not clear the L (Length) and M (More) flags before determining if a response should be fragmented, which allows remote attackers to cause a denial of service (crash) via a crafted message.","modified":"2026-01-30T00:31:02.877623Z","published":"2015-06-01T00:00:00Z","related":["USN-2650-1"],"upstream":["CVE-2015-4146"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2015-4146"},{"type":"REPORT","url":"http://w1.fi/security/2015-4/"},{"type":"REPORT","url":"http://w1.fi/security/2015-4/eap-pwd-missing-payload-length-validation.txt"},{"type":"REPORT","url":"http://w1.fi/security/2015-4/0005-EAP-pwd-peer-Fix-asymmetric-fragmentation-behavior.patch"},{"type":"REPORT","url":"http://www.openwall.com/lists/oss-security/2015/05/07/5"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-2650-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2015-4146"}],"affected":[{"package":{"name":"wpa","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/wpa@2.1-0ubuntu1.3?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1-0ubuntu1.3"}]}],"versions":["1.0-3ubuntu2","1.0-3ubuntu3","1.0-3ubuntu4","2.1-0ubuntu1","2.1-0ubuntu1.1","2.1-0ubuntu1.2"],"ecosystem_specific":{"binaries":[{"binary_name":"hostapd","binary_version":"1:2.1-0ubuntu1.3"},{"binary_name":"wpagui","binary_version":"2.1-0ubuntu1.3"},{"binary_name":"wpasupplicant","binary_version":"2.1-0ubuntu1.3"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2015/UBUNTU-CVE-2015-4146.json"}}],"schema_version":"1.7.3","severity":[{"type":"Ubuntu","score":"medium"}]}