The eHCA driver in Linux kernel 2.6 before 2.6.22, when running on PowerPC, does not properly map userspace resources, which allows local users to read portions of physical address space.Referenceshttp://secunia.com/advisories/27322http://osvdb.org/45488http://www.securityfocus.com/bid/26161http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=721151d004dcf01a71b12bb6b893f9160284cf6ehttp://rhn.redhat.com/errata/RHSA-2007-0940.htmlhttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10793