Weakness
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.
Affected products
- sudo_project sudo
- siemens sinec_os
- siemens ruggedcom_rst2428p
References
- https://bugs.debian.org/1130593
- https://bugs.launchpad.net/ubuntu/+source/sudo/+bug/2143042
- https://github.com/sudo-project/sudo/commit/3e474c2f201484be83d994ae10a4e20e8c81bb69
- https://www.qualys.com/2026/03/10/crack-armor.txt
- https://lists.debian.org/debian-lts-announce/2026/06/msg00003.html
- https://access.redhat.com/errata/RHSA-2026:10758
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