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Vulnerability record · CVE-2018-19965 · published 8 December 2018

CVE-2018-19965: Xen vulnerability

Xen · Xen

An issue was discovered in Xen through 4.11.x allowing 64-bit PV guest OS users to cause a denial of service (host OS crash) because #GP[0] can occur after a non-canonical address is passed to the TLB flushing code. NOTE: this issue exists because of an incorrect CVE-2017-5754 (aka Meltdown) mitigation.

5.6 CVSS 3.0 Medium EPSS 0.41% · top 67.4%
5.6CVSS 3.0 base score, v2 4.7
0.41%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
12References
17 Jun 2026Last modified by NVD

Description

An issue was discovered in Xen through 4.11.x allowing 64-bit PV guest OS users to cause a denial of service (host OS crash) because #GP[0] can occur after a non-canonical address is passed to the TLB flushing code. NOTE: this issue exists because of an incorrect CVE-2017-5754 (aka Meltdown) mitigation.

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.html
http://www.securityfocus.com/bid/106182 Third Party AdvisoryVDB Entry
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UXC6BME7SXJI2ZIATNXCAH7
https://support.citrix.com/article/CTX239432 PatchThird Party Advisory
https://www.debian.org/security/2019/dsa-4369 Third Party Advisory
https://xenbits.xen.org/xsa/advisory-279.html MitigationPatchVendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.html
http://www.securityfocus.com/bid/106182 Third Party AdvisoryVDB Entry
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UXC6BME7SXJI2ZIATNXCAH7
https://support.citrix.com/article/CTX239432 PatchThird Party Advisory
https://www.debian.org/security/2019/dsa-4369 Third Party Advisory
https://xenbits.xen.org/xsa/advisory-279.html MitigationPatchVendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2018-19965), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.