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TITLE:
Linux Kernel PARISC "parisc_show_stack()" Denial of Service

SECUNIA ADVISORY ID:
SA32933

VERIFY ADVISORY:
http://secunia.com/advisories/32933/

CRITICAL:
Not critical

IMPACT:
DoS

WHERE:
Local system

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

DESCRIPTION:
A vulnerability has been reported in the Linux Kernel, which can be
exploited by malicious, local users to cause a DoS (Denial of
Service).

The vulnerability is caused due to an error within the
"parisc_show_stack()" function when trying to unwind a stack
containing userspace addresses, which can be exploited to crash a
vulnerable system.

Successful exploitation requires that the kernel is running on a
PARISC 32bit or 64bit machine.

SOLUTION:
Fixed in version 2.6.28-rc7.

PROVIDED AND/OR DISCOVERED BY:
Helge Deller

ORIGINAL ADVISORY:
http://marc.info/?l=linux-parisc&m=121736357203624&w=2

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