Raw character devices (raw.c) in the Linux kernel 2.6.x call the wrong function before passing an ioctl to the block device, which crosses security boundaries by making kernel address space accessible from user space, a similar vulnerability to CVE-2005-1589.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10264
http://www.vupen.com/english/advisories/2005/0557
http://www.securityfocus.com/bid/13651
http://www.securityfocus.com/archive/1/427980/100/0/threaded
http://www.redhat.com/support/errata/RHSA-2005-420.html
http://marc.info/?l=linux-kernel&m=111630512512222
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.11.10
http://archives.neohapsis.com/archives/vulnwatch/2005-q2/0046.html