CVE-2018-7540

medium

Description

An issue was discovered in Xen through 4.10.x allowing x86 PV guest OS users to cause a denial of service (host OS CPU hang) via non-preemptable L3/L4 pagetable freeing.

References

Advisories
More

https://www.debian.org/security/2018/dsa-4131

https://security.gentoo.org/glsa/201810-06

https://lists.debian.org/debian-lts-announce/2018/03/msg00003.html

https://xenbits.xen.org/xsa/advisory-252.html

https://support.citrix.com/article/CTX232655

https://support.citrix.com/article/CTX232096

https://lists.debian.org/debian-lts-announce/2018/11/msg00013.html

https://euvd.enisa.europa.eu/vulnerability/EUVD-2018-19267

http://www.securitytracker.com/id/1040773

http://www.securityfocus.com/bid/103174

Details

Source: Mitre, NVD

Published: 2018-02-27

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 4.9

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 6.5

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