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Category:   Application (Generic)  >   Xen Vendors:   Xen Project
Xen ARM Generic Interrupt Controller Array Access Error Lets Local Users on a Guest System Cause Denial of Service Conditions on the Host System
SecurityTracker Alert ID:  1038735
SecurityTracker URL:
CVE Reference:   CVE-2017-10923   (Links to External Site)
Updated:  Jul 7 2017
Original Entry Date:  Jun 21 2017
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 4.6.x, 4.7.x, 4.8.x
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 send specially crafted software generated interrupts to vCPUS that use the MMIO register GICD_SGIR (GICv2) or System Register ICC_SGI1R (GICv3) to trigger an array access error and cause the hypervisor to crash.

ARM systems are affected.

x86 systems are not affected.

Julien Grall of ARM reported this vulnerability.

Impact:   A local user on the guest system can cause the target hypervisor to crash.
Solution:   The vendor has issued a fix (xsa225.patch).

The vendor advisory is available at:

Vendor URL: (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any)

Message History:   None.

 Source Message Contents

[Original Message Not Available for Viewing]

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