qemu-dm.debug in Xen 3.2.1 allows local users to overwrite arbitrary files via a symlink attack on the /tmp/args temporary file.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9576
https://exchange.xforce.ibmcloud.com/vulnerabilities/46545
https://bugs.gentoo.org/show_bug.cgi?id=235805
https://bugs.gentoo.org/show_bug.cgi?id=235770
http://www.redhat.com/support/errata/RHSA-2009-0003.html
http://www.openwall.com/lists/oss-security/2008/10/30/2
http://www.mandriva.com/security/advisories?name=MDVSA-2009:016
http://dev.gentoo.org/~rbu/security/debiantemp/xen-utils-3.2-1