A certain Red Hat patch for acpid 1.0.4 effectively triggers a call to the open function with insufficient arguments, which might allow local users to leverage weak permissions on /var/log/acpid, and obtain sensitive information by reading this file, cause a denial of service by overwriting this file, or gain privileges by executing this file.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10555
https://exchange.xforce.ibmcloud.com/vulnerabilities/54677
https://bugzilla.redhat.com/show_bug.cgi?id=542926
https://bugzilla.redhat.com/show_bug.cgi?id=515062
http://www.securityfocus.com/bid/37249
http://www.redhat.com/support/errata/RHSA-2009-1642.html
http://www.mandriva.com/security/advisories?name=MDVSA-2009:342