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CVE-2018-15469

Published: 17 August 2018

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).

Notes

AuthorNote
mdeslaur
hypervisor packages are in universe. For
issues in the hypervisor, add appropriate
tags to each section, ex:
Tags_xen: universe-binary

Priority

Medium

Cvss 3 Severity Score

6.5

Score breakdown

Status

Package Release Status
xen
Launchpad, Ubuntu, Debian
bionic Needed

cosmic Ignored
(end of life)
disco Ignored
(end of life)
eoan Ignored
(end of life)
focal Not vulnerable
(4.11.1~pre.20180911.5acdd26fdc+dfsg-2)
groovy Ignored
(end of life)
hirsute Ignored
(end of life)
impish Ignored
(end of life)
jammy Not vulnerable
(4.11.1~pre.20180911.5acdd26fdc+dfsg-2)
kinetic Not vulnerable
(4.11.1~pre.20180911.5acdd26fdc+dfsg-2)
lunar Not vulnerable
(4.11.1~pre.20180911.5acdd26fdc+dfsg-2)
mantic Not vulnerable
(4.11.1~pre.20180911.5acdd26fdc+dfsg-2)
trusty Does not exist
(trusty was needs-triage)
upstream
Released (4.11.1~pre.20180911.5acdd26fdc+dfsg-2)
xenial Needed

Binaries built from this source package are in Universe and so are supported by the community.

Severity score breakdown

Parameter Value
Base score 6.5
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Changed
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H