The rm_rf_children function in util.c in the systemd-logind login manager in systemd before 44, when logging out, allows local users to delete arbitrary files via a symlink attack on unspecified files, related to "particular records related with user session."
https://bugzilla.redhat.com/show_bug.cgi?id=803358
http://www.openwall.com/lists/oss-security/2012/03/16/21
http://www.mandriva.com/security/advisories?name=MDVSA-2012:030
http://lists.fedoraproject.org/pipermail/package-announce/2012-April/079075.html