The poll_mode_io file for the megaraid_sas driver in the Linux kernel 2.6.31.6 and earlier has world-writable permissions, which allows local users to change the I/O mode of the driver by modifying this file.Referenceshttp://secunia.com/advisories/38276http://lists.opensuse.org/opensuse-security-announce/2009-12/msg00002.htmlhttp://www.ubuntu.com/usn/usn-864-1https://bugzilla.redhat.com/show_bug.cgi?id=526068http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.htmlhttp://secunia.com/advisories/38779http://www.securityfocus.com/bid/37019http://support.avaya.com/css/P8/documents/100073666http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.htmlhttp://secunia.com/advisories/37909http://lists.opensuse.org/opensuse-security-announce/2010-03/msg00000.htmlhttp://lists.opensuse.org/opensuse-security-announce/2009-12/msg00005.htmlhttp://www.debian.org/security/2010/dsa-1996http://www.openwall.com/lists/oss-security/2009/11/13/1https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10310https://rhn.redhat.com/errata/RHSA-2010-0095.htmlhttp://lists.opensuse.org/opensuse-security-announce/2010-01/msg00005.htmlhttp://osvdb.org/60201https://rhn.redhat.com/errata/RHSA-2010-0046.htmlhttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7540http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00002.htmlhttp://secunia.com/advisories/38017http://secunia.com/advisories/38492