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/.
git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.27.y.git%3Ba=commit%3Bh=81156928f8fe31621e467490b9d441c0285998c3
kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.27.13
kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.28.2
lists.opensuse.org/opensuse-security-announce/2009-02/msg00003.html
lists.opensuse.org/opensuse-security-announce/2009-06/msg00000.html
lists.opensuse.org/opensuse-security-announce/2009-06/msg00001.html
secunia.com/advisories/33656
secunia.com/advisories/33758
secunia.com/advisories/34252
secunia.com/advisories/34394
secunia.com/advisories/34502
secunia.com/advisories/34680
secunia.com/advisories/34762
secunia.com/advisories/34981
secunia.com/advisories/35011
secunia.com/advisories/35390
secunia.com/advisories/35394
secunia.com/advisories/37471
support.avaya.com/elmodocs2/security/ASA-2009-114.htm
www.debian.org/security/2009/dsa-1749
www.debian.org/security/2009/dsa-1787
www.debian.org/security/2009/dsa-1794
www.redhat.com/support/errata/RHSA-2009-0326.html
www.redhat.com/support/errata/RHSA-2009-0331.html
www.redhat.com/support/errata/RHSA-2009-0360.html
www.securityfocus.com/archive/1/507985/100/0/threaded
www.securityfocus.com/bid/33428
www.ubuntu.com/usn/usn-751-1
www.vmware.com/security/advisories/VMSA-2009-0016.html
www.vupen.com/english/advisories/2009/3316
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10163
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7734