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Category:   Application (Generic)  >   Xen Vendors:   XenSource
Xen ARM Hardware Access Flaw Lets Local Guest Users Deny Service on the Host System
SecurityTracker Alert ID:  1030135
SecurityTracker URL:  http://securitytracker.com/id/1030135
CVE Reference:   CVE-2014-2915   (Links to External Site)
Updated:  Apr 23 2014
Original Entry Date:  Apr 23 2014
Impact:   Denial of service via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 4.4 and later
Description:   A vulnerability was reported in Xen. A local user on the guest operating system can cause denial of service conditions on other guests or on the host operating system.

A local user on the guest operating system on an ARM-based system can access various hardware features, such as cache control, coprocessors, debug registers, and processor specific registers. This can be exploited to cause other guest systems or the host system to crash and to corrupt data on the system.

x86 systems are not affected.

Thomas Leonard reported this vulnerability.

Impact:   A local user on the guest operating system can cause denial of service conditions on other guests or on the host operating system.
Solution:   The vendor has issued a fix (xsa93-4.4-01.patch, xsa93-4.4-02.patch, xsa93-4.4-03.patch, xsa93-4.4-04.patch, xsa93-4.4-05.patch, xsa93-4.4-06.patch).
Vendor URL:  www.xen.org/ (Links to External Site)
Cause:   Access control error
Underlying OS:   Linux (Any)

Message History:   None.


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