The lvmcreate_initrd script in the lvm package in Trustix Secure Linux 1.5 through 2.1, and possibly other operating systems, allows local users to overwrite files via a symlink attack on temporary files.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10632
https://exchange.xforce.ibmcloud.com/vulnerabilities/17583
http://www.trustix.org/errata/2004/0050
http://www.securityfocus.com/bid/11290