An invalid authentication sequence could result in the hostapd process terminating due to missing state validation steps when processing the SAE confirm message when in hostapd/AP mode. All version of hostapd with SAE support are vulnerable. An attacker may force the hostapd process to terminate, performing a denial of service attack. Both hostapd with SAE support and wpa_supplicant with SAE support prior to and including version 2.7 are affected.
https://www.synology.com/security/advisory/Synology_SA_19_16
https://w1.fi/security/2019-3/
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:03.wpa.asc
https://seclists.org/bugtraq/2019/May/40
http://packetstormsecurity.com/files/152914/FreeBSD-Security-Advisory-FreeBSD-SA-19-03.wpa.html
http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00021.html