In Ubuntu's accountsservice an unprivileged local attacker can trigger a use-after-free vulnerability in accountsservice by sending a D-Bus message to the accounts-daemon process.
https://ubuntu.com/security/notices/USN-6190-1
https://securitylab.github.com/advisories/GHSL-2023-139_accountsservice/
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-3297
https://bugs.launchpad.net/ubuntu/+source/accountsservice/+bug/2024182