selinux_edit_copy_tfiles in sudoedit in Sudo before 1.9.5 allows a local unprivileged user to gain file ownership and escalate privileges by replacing a temporary file with a symlink to an arbitrary file target. This affects SELinux RBAC support in permissive mode. Machines without SELinux are not vulnerable. CREATE(Triage):(User=admin) [CVE-2021-23240|https://nvd.nist.gov/vuln/detail/CVE-2021-23240]
