UBUNTU-CVE-2018-12904

Advisory lineage Upstream: 1 Downstream: 3
Upstream
CVE-2018-12904
Published: 27 Jun 2018, 00:00
Last modified:22 Apr 2026, 11:35

Vulnerability Summary

Overall Risk (default)
low
20/100
CVSS Score
4.9 MEDIUM
3.0 (osv_ubuntu)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

27 Jun 2018, 00:00
Published
Vulnerability first disclosed
22 Apr 2026, 11:35
Last Modified
Vulnerability information updated

Description

In arch/x86/kvm/vmx.c in the Linux kernel before 4.17.2, when nested virtualization is used, local attackers could cause L1 KVM guests to VMEXIT, potentially allowing privilege escalations and denial of service attacks due to lack of checking of CPL.

CVSS Metrics

  • v3.0•MEDIUM•Score: 4.9CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Affected Systems

  • ubuntu•linux

    < 4.15.0-33.36

  • ubuntu•linux-aws

    < 4.15.0-1020.20

  • ubuntu•linux-azure

    < 4.15.0-1022.22~16.04.1 | < 4.15.0-1022.23

  • ubuntu•linux-gcp

    < 4.15.0-1018.19~16.04.2 | < 4.15.0-1018.19

  • ubuntu•linux-hwe

    < 4.15.0-33.36~16.04.1

  • ubuntu•linux-kvm

    < 4.15.0-1020.20

  • ubuntu•linux-oem

    < 4.15.0-1017.20

  • ubuntu•linux-raspi2

    < 4.15.0-1021.23

References (6)