CVE Vulnerabilities

CVE-2017-10917

NULL Pointer Dereference

Published: Jul 05, 2017 | Modified: Nov 04, 2017
CVSS 3.x
9.1
CRITICAL
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CVSS 2.x
9.4 HIGH
AV:N/AC:L/Au:N/C:C/I:N/A:C
RedHat/V2
RedHat/V3
Ubuntu

Xen through 4.8.x does not validate the port numbers of polled event channel ports, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) or possibly obtain sensitive information, aka XSA-221.

Weakness

A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.

Affected Software

Name Vendor Start Version End Version
Xen Xen * 4.8.1

Potential Mitigations

References