VULNERABILITY INTELLIGENCE

CVE-2018-19967

CVSS score6.5 MEDIUM
EPSS probability0.45%
CISA KEVNot currently listed
Published2018-12-08
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Description

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.

Weakness classification

  • CWE-20: Improper Input Validation

Primary references