CVE-2018-5244
This allows guest OS administrators to cause a denial of service (host OS memory consumption) by rebooting many times.
Does this matter?
Lower severity and a low EPSS score (0.37%). Track it; it rarely justifies an emergency change on its own.
Description
In Xen 4.10, new infrastructure was introduced as part of an overhaul to how MSR emulation happens for guests. Unfortunately, one tracking structure isn't freed when a vcpu is destroyed. This allows guest OS administrators to cause a denial of service (host OS memory consumption) by rebooting many times.
- CVSS 3.0
- 6.5 MEDIUMCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
- EPSS
- 0.37% probability · 31th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- xen/xen
- Source
- cve@mitre.org
EPSS 0.4% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.securityfocus.com/bid/102433Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040774
- https://security.gentoo.org/glsa/201810-06
- https://xenbits.xen.org/xsa/advisory-253.htmlIssue Tracking, Mitigation, Vendor Advisory
- http://www.securityfocus.com/bid/102433Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040774
- https://security.gentoo.org/glsa/201810-06
- https://xenbits.xen.org/xsa/advisory-253.htmlIssue Tracking, Mitigation, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.