01 Record

CVE-2018-19961

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.

UnratedPUBLISHEDCNA: mitre

CNA base scoreUnratedNo CNA CVSS vector

View raw JSON

02 Description

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.

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 0.40% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 34.8% of scored records. A rank, not a probability.
NVD base score: 7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-06-17.
Red Hat severity: Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2018-12-08 04:00Z7 YR AGO

Last updated

2024-08-05 11:51Z2 YR AGO

Reserved

2018-12-07

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-459Incomplete CleanupBase
CWE-212Improper Removal of Sensitive Information Before Storage or TransferBase

Data version

5.1

Document digest

ae2f0e2514920615f1ecf31580d849c07d825a790b9093562bb7fd037d31ed30

05 Affected products

VendorProductVersionsPlatforms

citrixxenserverNot specified—

debiandebian_linuxNot specified—

redhatenterprise_linuxNot specified—

xenxenNot specified—

06 References

support.citrix.comhttps://support.citrix.com/article/CTX239432x_refsource_CONFIRM
www.debian.orgDSA-4369https://www.debian.org/security/2019/dsa-4369vendor-advisoryx_refsource_DEBIAN
www.securityfocus.com106182http://www.securityfocus.com/bid/106182vdb-entryx_refsource_BID
xenbits.xen.orghttps://xenbits.xen.org/xsa/advisory-275.htmlx_refsource_MISC
lists.fedoraproject.orgFEDORA-2019-bce6498890https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UXC6BME7SXJI2ZIATNXCAH7RGPI4UKTT/vendor-advisoryx_refsource_FEDORA
lists.opensuse.orgopenSUSE-SU-2019:1226http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.htmlvendor-advisoryx_refsource_SUSE
lists.debian.org[debian-lts-announce] 20191008 [SECURITY] [DLA 1949-1] xen security updatehttps://lists.debian.org/debian-lts-announce/2019/10/msg00008.htmlmailing-listx_refsource_MLIST

07 Fixed in

Debian 12

xen
Fixed in 4.11.1-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

xen
Fixed in 4.11.1-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

xen
Fixed in 4.11.1-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

xen
No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.