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Category:   Application (Generic)  >   Xen Vendors:   Xen Project
Xen IRQ Access Control Flaw May Let Local Guest Users Cause Denial of Service Conditions on the Host System
SecurityTracker Alert ID:  1028458
SecurityTracker URL:  http://securitytracker.com/id/1028458
CVE Reference:   CVE-2013-1919   (Links to External Site)
Date:  Apr 22 2013
Impact:   Denial of service via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  

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

A stub domain kernel can exploit an IRQ access control flaw to grant a client domain access to an unauthorized IRQ, which may result in denial of service conditions on the host system.

Xen systems using stub domains are affected.

Guests with passed-through IRQs or PCI devices can exploit this flaw.

Impact:   A local user on a guest operating system can cause denial of service conditions on the target host system.
Solution:   The vendor has issued a fix (xsa46-4.1.patch, xsa46-4.2.patch).
Vendor URL:  www.xen.org/ (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
May 10 2013 (Citrix Issues Fix for XenServer) Xen IRQ Access Control Flaw May Let Local Guest Users Cause Denial of Service Conditions on the Host System
Citrix has issued a fix for XenServer.



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