The problem can be corrected by updating your system to the following package versions: Ubuntu 19.04: hostapd 2:2.6-21ubuntu3.2 wpasupplicant 2:2.6-21ubuntu3.2 Ubuntu 18.04 LTS: hostapd 2:2.6-15ubuntu2.4 wpasupplicant 2:2.6-15ubuntu2.4 After a standard system update you need to reboot your computer to make all the necessary changes.
https://ubuntu.com/security/notices/USN-4098-1
CVE-2019-13377
https://launchpad.net/ubuntu/+source/wpa/2:2.6-21ubuntu3.2 https://launchpad.net/ubuntu/+source/wpa/2:2.6-15ubuntu2.4
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