SUSE Linux before 9.1 and SUSE Linux Enterprise Server before 9 do not properly check commands sent to CD devices that have been opened read-only, which could allow local users to conduct unauthorized write activities to modify the firmware of associated SCSI devices.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9369
https://exchange.xforce.ibmcloud.com/vulnerabilities/18370
http://www.securityfocus.com/bid/11784
http://www.redhat.com/support/errata/RHSA-2006-0101.html
http://www.novell.com/linux/security/advisories/2004_42_kernel.html