system
Provide references for <CVE-2021-3939>.
user
Where can I find more information about <CVE-2021-3939>?
assistant
References are available at: https://ubuntu.com/security/notices/USN-5149-1, https://bugs.launchpad.net/ubuntu/+source/accountsservice/+bug/1950149, http://packetstormsecurity.com/files/172848/Ubuntu-accountsservice-Double-Free-Memory-Corruption.html.