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Fencer Intel
high 7.8

CVE-2018-19961 json

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…

published 7y ago modified 4mo ago also EUVD-2018-11631

cvss
7.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 35%
public exploits
0
none known

Summary

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.

Patch / fix

  • xen Debian 14, Debian 13, Debian 12 4.11.1-1

debian advisories DEBIAN-CVE-2018-19961

  • xen SLE Point of Sale 11 SP3 4.2.5_21-45.30.1
  • xen SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +2 more 4.7.6_05-43.45.1
  • xen SLES for SAP 11 SP4, SLES 11 SP4, SLE Software Development Kit 11 SP4 4.4.4_38-61.40.1
  • xen SLES for SAP 12 SP4, SLES 12 SP4, SLED 12 SP4 +1 more 4.11.1_02-2.3.1
  • xen SLE Module for Server Applications 15, SLE Module for Basesystem 15 4.10.2_04-3.9.1
  • xen SLES for SAP 12 SP3, SLES 12 SP3, SLED 12 SP3 +1 more 4.9.3_03-3.47.1
  • xen SLES 12-LTSS 4.4.4_40-22.77.1
  • xen SLES for SAP 12 SP1, SLES 12 SP1-LTSS 4.5.5_28-22.58.1

suse advisories SUSE-SU-2019:14011-1SUSE-SU-2019:0827-1SUSE-SU-2019:0825-1SUSE-SU-2019:0020-1SUSE-SU-2019:13921-1SUSE-SU-2019:0003-1

  • xen openSUSE Tumbleweed 4.15.1_01-1.2

opensuse advisories openSUSE-SU-2024:11520-1

  • xen Alpine 3.24, Alpine 3.23, Alpine 3.22 +13 more 4.11.1-r0
  • xen Alpine 3.6 4.8.5-r0
  • xen Alpine 3.7 4.9.3-r1
  • xen Alpine 3.8 4.10.2-r1

alpine advisories ALPINE-CVE-2018-19961

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Is CVE-2018-19961 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-19961 updated cvss 8.1

xen: insufficient TLB flushing / improper large page mappings with AMD IOMMUs

  • Red Hat Enterprise Linux 5 kernel-xen
    affected: no fix planned “Will not fix”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 7.8 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
NVD 2.0 6.9 AV:L/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.