CVE-2018-19967

An issue was discovered in Xen through 4.11.x on Intel x86 platforms allowing guest OS users to cause a denial of service (host OS hang) because Xen does not work around Intel's mishandling of certain HLE transactions associated with the KACQUIRE instruction prefix.

• CWE-20

• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00057.html
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.html
• http://www.securityfocus.com/bid/106182Third Party Advisory, VDB Entry
• https://support.citrix.com/article/CTX239432Third Party Advisory
• https://www.debian.org/security/2019/dsa-4369Third Party Advisory
• https://xenbits.xen.org/xsa/advisory-282.htmlPatch, Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00057.html
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.html
• http://www.securityfocus.com/bid/106182Third Party Advisory, VDB Entry
• https://support.citrix.com/article/CTX239432Third Party Advisory
• https://www.debian.org/security/2019/dsa-4369Third Party Advisory
• https://xenbits.xen.org/xsa/advisory-282.htmlPatch, Vendor Advisory

Published

Dec 8, 2018

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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