Ubuntu accountsservice CVE-2021-3939 (GHSL-2021-1011)

https://securitylab.github.com/research/ubuntu-accountsservice-CVE-2021-3939/

https://github.com/github/securitylab/tree/b36e194556f956c3ec63bf9d8af454c8f620f33a/SecurityExploits/Ubuntu/accountsservice_CVE-2021-3939

https://www.bleepingcomputer.com/news/security/attackers-can-get-root-by-crashing-ubuntu-s-accountsservice/