CVE-2019-17346

Name: CVE-2019-17346
Creator: NVD / NIST
Published: 2019-10-08T01:15:10.83+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.35%

Last modified Jun 17, 2026

CVE-2019-17346 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges because of an incompatibility between Process Context Identifiers (PCID) and TLB flushes.. EPSS estimates a 0.35% chance of exploitation in the next 30 days.

Description

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges because of an incompatibility between Process Context Identifiers (PCID) and TLB flushes.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS Probability

0.35%

26.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Xen	Xen	<= 4.11.2
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0

References

http://www.openwall.com/lists/oss-security/2019/10/25/5Mailing List
http://xenbits.xen.org/xsa/advisory-292.htmlPatch, Vendor Advisory
https://seclists.org/bugtraq/2020/Jan/21Mailing List, Third Party Advisory
https://www.debian.org/security/2020/dsa-4602Third Party Advisory
https://xenbits.xen.org/xsa/advisory-292.htmlVendor Advisory
http://www.openwall.com/lists/oss-security/2019/10/25/5Mailing List
http://xenbits.xen.org/xsa/advisory-292.htmlPatch, Vendor Advisory
https://seclists.org/bugtraq/2020/Jan/21Mailing List, Third Party Advisory
https://www.debian.org/security/2020/dsa-4602Third Party Advisory
https://xenbits.xen.org/xsa/advisory-292.htmlVendor Advisory

Timeline

Published: Oct 8, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-17346?

How severe is CVE-2019-17346?

CVE-2019-17346 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.35% probability of exploitation in the next 30 days.

How do I fix CVE-2019-17346?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-17346?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST