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Category:   Application (Generic)  >   Xen Vendors:   Xen Project
Xen Use After Free in hvm_domain_relinquish_resources() Lets Certain Local Users Deny Service on the Host System
SecurityTracker Alert ID:  1031498
SecurityTracker URL:  http://securitytracker.com/id/1031498
CVE Reference:   CVE-2015-0361   (Links to External Site)
Date:  Jan 6 2015
Impact:   Denial of service via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 4.2.x, 4.3.x, 4.4.x
Description:   A vulnerability was reported in Xen. A local user can cause denial of service conditions on the host system.

A local user on a stub domain kernel or tool stack outside of Domain0 can trigger a use-after-free memory error in tearing down an HVM guest.

x86 systems are affected.

ARM systems are not affected.

Only systems using stub domains or other forms of disaggregation of control domains for HVM guests are affected.

Mihai Dontu from Bitdefender reported this vulnerability.

Impact:   A local user on a stub domain kernel or tool stack outside of Domain0 can cause the host system to crash.
Solution:   The vendor has issued a fix (xsa116-4.3-4.2.patch, xsa116.patch; Advisory XSA-116).
Vendor URL:  www.xen.org/ (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any)

Message History:   None.


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