What’s Vulnerable › Vulnerabilities

CVE-2018-19967

• Severity: medium (CVSS 6.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-12-08 · updated 2026-06-17
• Weakness: CWE-20

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.

Affected products

• Debian Linux: 9.0
• xen: through 4.11.1

References

• 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/106182
• https://support.citrix.com/article/CTX239432
• https://www.debian.org/security/2019/dsa-4369
• https://xenbits.xen.org/xsa/advisory-282.html
• 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/106182
• https://support.citrix.com/article/CTX239432
• https://www.debian.org/security/2019/dsa-4369
• https://xenbits.xen.org/xsa/advisory-282.html

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