CVE-2018-19966

High

Description

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service (host OS crash) or possibly gain host OS privileges because of an interpretation conflict for a union data structure associated with shadow paging. NOTE: this issue exists because of an incorrect fix for CVE-2017-15595.

SeverityHigh

CVSS8.8

Exploit probability—

Product

Xen

PublishedDec 8, 2018

First seenDec 8, 2018

How to fix

Vendor advisories

debian.org/security/2019/dsa-4369
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UXC6BME7SXJI2ZIATNXCAH7RGPI4UKTT/

Affected products

Product	Affected versions	Fixed in
xen xen	4.11.0 ≤ v ≤ 4.11.1	—
debian debian_linux	9.0	—

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