CVE-2018-7540

MEDIUM

Xen < 4.10.0 - Denial of Service via Non-Preemptable L3/L4 Pagetable Freeing

Title source: llm
STIX 2.1

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 (9)

Core 9
Core References
Vendor Advisory x_refsource_confirm
https://xenbits.xen.org/xsa/advisory-252.html
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201810-06
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1040773
Mailing List mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2018/11/msg00013.html
Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2018/03/msg00003.html
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/103174
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2018/dsa-4131
Vendor Advisory x_refsource_confirm
https://support.citrix.com/article/CTX232655
Vendor Advisory x_refsource_confirm
https://support.citrix.com/article/CTX232096

Scores

CVSS v3 6.5
EPSS 0.0011
EPSS Percentile 29.0%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Details

CWE
CWE-400
Status published
Products (2)
debian/debian_linux 9.0
xen/xen < 4.10.0
Published Feb 27, 2018
Tracked Since Feb 18, 2026