CVE-2019-3887 — Vulnetix

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CVE-2019-3887 PUBLISHED

A flaw was found in the way KVM hypervisor handled x2APIC Machine Specific Rregister (MSR) access with nested(=1) virtualization enabled. In that, L1 guest could access L0's APIC register values via L2 guest, when 'virtualize x2APIC mode' is enabled. A guest could use this flaw to potentially crash the host kernel resulting in DoS issue. Kernel versions from 4.16 and newer are vulnerable to this issue.

EPSS 0.04% · 10.9th percentile

Risk Scores

EPSS Score

0.04%

10.9th percentile

Affected Products

Vendor	Product	Versions
Ubuntu:18.04:LTS	linux-hwe	4.18.0-18.19~18.04.1, 0, 4.18.0-13.14~18.04.1
Ubuntu:18.04:LTS	linux-gcp-edge	0, 4.18.0-1004.5~18.04.1, 4.18.0-1005.6~18.04.1
Ubuntu:18.04:LTS	linux-azure	4.15.0-1025.26, 4.15.0-1028.29, 4.15.0-1030.31

Timeline

Apr 9, 2019 CVE Published
Apr 14, 2021 EPSS Score
Jun 22, 2021 EPSS Score
Aug 23, 2021 EPSS Score
Oct 24, 2021 EPSS Score
Jan 6, 2022 EPSS Score
Feb 4, 2022 EPSS Score
Feb 25, 2022 EPSS Score
Apr 1, 2022 EPSS Score
Apr 28, 2022 EPSS Score
Jun 29, 2022 EPSS Score
Aug 31, 2022 EPSS Score

References

https://ubuntu.com/security/CVE-2019-3887 third-party-advisory
https://www.openwall.com/lists/oss-security/2019/04/08/1 third-party-advisory
https://ubuntu.com/security/notices/USN-3979-1 vendor-advisory
https://ubuntu.com/security/notices/USN-3980-1 vendor-advisory
https://ubuntu.com/security/notices/USN-3980-2 vendor-advisory
https://www.cve.org/CVERecord?id=CVE-2019-3887 third-party-advisory

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