CVE-2009-3288 Information

Description

The sg_build_indirect function in drivers/scsi/sg.c in Linux kernel 2.6.28-rc1 through 2.6.31-rc8 uses an incorrect variable when accessing an array which allows local users to cause a denial of service (kernel OOPS and NULL pointer dereference) as demonstrated by using xcdroast to duplicate a CD. NOTE: this is only exploitable by users who can open the cdrom device.

Reference

http://lkml.org/lkml/2009/9/3/1 http://lkml.org/lkml/2009/9/3/107 http://secunia.com/advisories/37105 http://www.openwall.com/lists/oss-security/2009/09/03/4 http://www.ubuntu.com/usn/USN-852-1