CVE-2018-15469 Information

Description

An issue was discovered in Xen through 4.11.x. ARM never properly implemented grant table v2 either in the hypervisor or in Linux. Unfortunately an ARM guest can still request v2 grant tables; they will simply not be properly set up resulting in subsequent grant-related hypercalls hitting BUG() checks. An unprivileged guest can cause a BUG() check in the hypervisor resulting in a denial-of-service (crash).

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Reference

http://xenbits.xen.org/xsa/advisory-268.html https://lists.debian.org/debian-lts-announce/2018/11/msg00013.html https://security.gentoo.org/glsa/201810-06

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

6.5