CVE-2018-19961
HIGHXen < 4.11.1 - Privilege Escalation via IOMMU Mapping TLB Flush Bypass
Title source: llmDescription
An issue was discovered in Xen through 4.11.x on AMD x86 platforms, possibly allowing guest OS users to gain host OS privileges because TLB flushes do not always occur after IOMMU mapping changes.
References (7)
Core 7
Core References
Third Party Advisory x_refsource_confirm
https://support.citrix.com/article/CTX239432
Third Party Advisory vendor-advisory
x_refsource_debian
https://www.debian.org/security/2019/dsa-4369
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/106182
Patch, Vendor Advisory x_refsource_misc
https://xenbits.xen.org/xsa/advisory-275.html
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UXC6BME7SXJI2ZIATNXCAH7RGPI4UKTT/
Mailing List vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.html
Mailing List mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2019/10/msg00008.html
Scores
CVSS v3
7.8
EPSS
0.0041
EPSS Percentile
32.3%
Attack Vector
LOCAL
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Details
CWE
CWE-459
Status
published
Products (6)
citrix/xenserver
7.0
citrix/xenserver
7.1 cu1
citrix/xenserver
7.5
citrix/xenserver
7.6
debian/debian_linux
9.0
xen/xen
< 4.11.1
Published
Dec 08, 2018
Tracked Since
Feb 18, 2026