The z90crypt_unlocked_ioctl function in the z90crypt driver in the Linux kernel 2.6.9 does not perform a capability check for the Z90QUIESCE operation, which allows local users to leverage euid 0 privileges to force a driver outage.Referenceshttp://www.openwall.com/lists/oss-security/2009/09/15/1https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9513http://www.ubuntu.com/usn/USN-852-1http://secunia.com/advisories/36759https://bugzilla.redhat.com/show_bug.cgi?id=505983http://www.openwall.com/lists/oss-security/2009/09/15/3http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00007.htmlhttp://www.redhat.com/support/errata/RHSA-2009-1438.htmlhttp://secunia.com/advisories/37105
