Vulnerability 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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Xen | Xen | <= 4.11.1 |
| Citrix | Xenserver | 7.0 |
| Debian | Debian Linux | 9.0 |
References
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.html
- http://www.securityfocus.com/bid/106182Third Party AdvisoryVDB Entry
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://support.citrix.com/article/CTX239432PatchThird Party Advisory
- https://www.debian.org/security/2019/dsa-4369Third Party Advisory
- https://xenbits.xen.org/xsa/advisory-279.htmlMitigationPatchVendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.html
- http://www.securityfocus.com/bid/106182Third Party AdvisoryVDB Entry
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://support.citrix.com/article/CTX239432PatchThird Party Advisory
- https://www.debian.org/security/2019/dsa-4369Third Party Advisory
- https://xenbits.xen.org/xsa/advisory-279.htmlMitigationPatchVendor Advisory
FAQ
What is CVE-2018-19965?
CVE-2018-19965 is a vulnerability with a CVSS score of 5.6 (MEDIUM). 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...
How severe is CVE-2018-19965?
CVE-2018-19965 has been rated MEDIUM with a CVSS base score of 5.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-19965?
Check the references section above for vendor advisories and patch information. Affected products include: Xen Xen, Citrix Xenserver, Debian Debian Linux.