CVE-2018-19965
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.
Does this matter?
Lower severity and a low EPSS score (0.43%). Track it; it rarely justifies an emergency change on its own.
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
- 5.6 MEDIUMCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H
- EPSS
- 0.43% probability · 37th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- xen/xen · citrix/xenserver · debian/debian linux
- 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://lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.html
- http://www.securityfocus.com/bid/106182Third Party Advisory, VDB Entry
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UXC6BME7SXJI2ZIATNXCAH7RGPI4UKTT/
- https://support.citrix.com/article/CTX239432Patch, Third Party Advisory
- https://www.debian.org/security/2019/dsa-4369Third Party Advisory
- https://xenbits.xen.org/xsa/advisory-279.htmlMitigation, Patch, Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.html
- http://www.securityfocus.com/bid/106182Third Party Advisory, VDB Entry
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UXC6BME7SXJI2ZIATNXCAH7RGPI4UKTT/
- https://support.citrix.com/article/CTX239432Patch, Third Party Advisory
- https://www.debian.org/security/2019/dsa-4369Third Party Advisory
- https://xenbits.xen.org/xsa/advisory-279.htmlMitigation, Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.