drivers/firmware/dell_rbu.c in the Linux kernel before 2.6.27.13, and 2.6.28.x before 2.6.28.2, allows local users to cause a denial of service (system crash) via a read system call that specifies zero bytes from the (1) image_type or (2) packet_size file in /sys/devices/platform/dell_rbu/.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7734
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10163
http://www.vupen.com/english/advisories/2009/3316
http://www.vmware.com/security/advisories/VMSA-2009-0016.html
http://www.ubuntu.com/usn/usn-751-1
http://www.securityfocus.com/bid/33428
http://www.securityfocus.com/archive/1/507985/100/0/threaded
http://www.redhat.com/support/errata/RHSA-2009-0360.html
http://www.redhat.com/support/errata/RHSA-2009-0331.html
http://www.redhat.com/support/errata/RHSA-2009-0326.html
http://www.debian.org/security/2009/dsa-1794
http://www.debian.org/security/2009/dsa-1787
http://www.debian.org/security/2009/dsa-1749
http://support.avaya.com/elmodocs2/security/ASA-2009-114.htm
http://secunia.com/advisories/37471
http://secunia.com/advisories/35394
http://secunia.com/advisories/35390
http://secunia.com/advisories/35011
http://secunia.com/advisories/34981
http://secunia.com/advisories/34762
http://secunia.com/advisories/34680
http://secunia.com/advisories/34502
http://secunia.com/advisories/34394
http://secunia.com/advisories/34252
http://secunia.com/advisories/33758
http://secunia.com/advisories/33656
http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2009-02/msg00003.html
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.28.2