CVE-2018-12207

Description

Improper invalidation for page table updates by a virtual guest operating system for multiple Intel(R) Processors may allow an authenticated user to potentially enable denial of service of the host system via local access.

How to fix CVE-2018-12207

To remediate CVE-2018-12207, upgrade the affected package to a fixed version below.

• Alpine/xen—upgrade to 4.12.1-r1 or later
• —upgrade to 5.3.9-2 or later
• —upgrade to 4.9.189-3+deb9u2 or later
• —upgrade to 4.9.189-3+deb9u2~deb8u1 or later
• —upgrade to 4.11.3+24-g14b62ab3e5-1 or later
• —upgrade to 4.8.5.final+shim4.10.4-1+deb9u12 or later

Is CVE-2018-12207 being exploited?

Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.

Affected packages (6)

• from 0, < 4.12.1-r1
• from 0, < 5.3.9-2
• from 0, < 4.9.189-3+deb9u2
• from 0, < 4.9.189-3+deb9u2~deb8u1
• from 0, < 4.11.3+24-g14b62ab3e5-1
• from 0, < 4.8.5.final+shim4.10.4-1+deb9u12

CVSS scores

References (2)

• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2018-12207
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2018-12207