Xen 'xen/arch/x86/irq.c' NULL pointer Dereference Remote Denial of Service Vulnerability

Bugtraq ID:	99157
Class:	Unknown
CVE:	CVE-2017-10917
Remote:	Yes
Local:	No
Published:	Jun 20 2017 12:00AM
Updated:	Jul 05 2017 07:05AM
Credit:	Ankur Arora of Oracle.
Vulnerable:	Xen Xen 4.4.1 Xen Xen 4.4.0
Not Vulnerable:

Xen 'xen/arch/x86/irq.c' NULL pointer Dereference Remote Denial of Service Vulnerability

Xen is prone to a remote denial-of-service vulnerability.

An attacker can exploit this issue to crash the host, denying service to legitimate users.

Xen 4.4.x and later versions are vulnerable.

Xen 'xen/arch/x86/irq.c' NULL pointer Dereference Remote Denial of Service Vulnerability

Currently, we are not aware of any working exploits. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected].

Xen 'xen/arch/x86/irq.c' NULL pointer Dereference Remote Denial of Service Vulnerability

Solution:
Updates are available. Please see the references or vendor advisory for more information.

Xen 'xen/arch/x86/irq.c' NULL pointer Dereference Remote Denial of Service Vulnerability

References:

• Xen Security Advisory 221 - NULL pointer deref in event channel poll (Seclists.org)
  
• Xen Project Homepage (Xen Project)
  
• Xen Security Advisory XSA-221 (Xen)