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Category:   Application (Generic)  >   Xen Vendors:   Xen Project
Xen ARM Memory Mapped Hardware Access Flaw Lets Local Users on a Guest System Cause Denial of Service Conditions on the Host System
SecurityTracker Alert ID:  1037358
SecurityTracker URL:  http://securitytracker.com/id/1037358
CVE Reference:   CVE-2016-9815, CVE-2016-9816, CVE-2016-9817, CVE-2016-9818   (Links to External Site)
Updated:  Dec 8 2016
Original Entry Date:  Nov 30 2016
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in Xen. A local user on the guest system can cause denial of service conditions on the host system.

A local user on the guest system can access memory mapped hardware to trigger an asynchronous abort (e.g., 'SError' on ARMv8) and cause the host system to crash.

Systems may be affected based on the integration of the hardware and firmware.

ARM engineering personnel reported this vulnerability.

Impact:   A local user on the guest system can cause the host system to crash.
Solution:   The vendor has issued a fix.

The vendor advisory is available at:

https://xenbits.xen.org/xsa/advisory-201.html

Vendor URL:  xenbits.xen.org/xsa/advisory-201.html (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any)

Message History:   None.


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