Xen ARM Multicall Processing Bug Lets Local Users on a Guest System Cause Denial of Service Conditions on the Host System
|
SecurityTracker Alert ID: 1034031 |
SecurityTracker URL: http://securitytracker.com/id/1034031
|
CVE Reference:
CVE-2015-7812
(Links to External Site)
|
Date: Oct 30 2015
|
Impact:
Denial of service via network
|
Fix Available: Yes Vendor Confirmed: Yes
|
Version(s): 4.4.x, 4.5.x, 4.6.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 issue a preemptable hypercall via the multicall interface to trigger a flaw in the handling of multicalls and cause the target host system to crash.
32-bit and 64-bit ARM systems are affected.
x86 systems are not affected.
Julien Grall of Citrix reported this vulnerability.
|
Impact:
A local user on the guest system can cause denial of service conditions on the host system.
|
Solution:
The vendor has issued a fix (xsa145.patch).
The vendor's advisory is available at:
http://xenbits.xen.org/xsa/advisory-145.html
|
Vendor URL: xenbits.xen.org/xsa/advisory-145.html (Links to External Site)
|
Cause:
Access control error
|
Underlying OS: Linux (Any)
|
|
Message History:
None.
|
Source Message Contents
|
|
[Original Message Not Available for Viewing]
|
|