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TITLE:
Linux Kernel dell_rbu Denial of Service Security Issues

SECUNIA ADVISORY ID:
SA33656

VERIFY ADVISORY:
http://secunia.com/advisories/33656/

CRITICAL:
Not critical

IMPACT:
DoS

WHERE:
Local system

OPERATING SYSTEM:
Linux Kernel 2.6.x
http://secunia.com/advisories/product/2719/

DESCRIPTION:
Two security issues have been reported in the Linux Kernel, which can
be exploited by malicious, local users to cause a DoS (Denial of
Service).

The security issues are caused due to errors within the
"read_rbu_image_type()" and "read_rbu_packet_size()" functions in
drivers/firmware/dell_rbu.c and can be exploited to crash a
vulnerable system by e.g. reading zero bytes from
/sys/devices/platform/dell_rbu/image_type or
/sys/devices/platform/dell_rbu/packet_size.

SOLUTION:
Update to version 2.6.27.13 or 2.6.28.2.

PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.

ORIGINAL ADVISORY:
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.27.13
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.28.2

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