CVE-2012-4542 Information

Description

block/scsi_ioctl.c in the Linux kernel through 3.8 does not properly consider the SCSI device class during authorization of SCSI commands which allows local users to bypass intended access restrictions via an SG_IO ioctl call that leverages overlapping opcodes.

Reference

http://marc.info/?l=linux-kernel&m=135903967015813&w=2 http://marc.info/?l=linux-kernel&m=135904012416042&w=2 http://rhn.redhat.com/errata/RHSA-2013-0496.html http://rhn.redhat.com/errata/RHSA-2013-0579.html http://rhn.redhat.com/errata/RHSA-2013-0882.html http://rhn.redhat.com/errata/RHSA-2013-0928.html https://bugzilla.redhat.com/show_bug.cgi?id=875360 https://oss.oracle.com/git/?p=redpatch.git;a=commit;h=76a274e17114abf1a77de6b651424648ce9e10c8