In Sudo through 1.9.17p2 before 3e474c2, a failure of a setuid, setgid, or setgroups call, during a privilege drop before running the mailer, is not a fatal error and can lead to privilege escalation.Referenceshttps://github.com/sudo-project/sudo/commit/3e474c2f201484be83d994ae10a4e20e8c81bb69https://www.qualys.com/2026/03/10/crack-armor.txthttps://bugs.launchpad.net/ubuntu/+source/sudo/+bug/2143042https://bugs.debian.org/1130593
