The prepare_vmcs02 function in arch/x86/kvm/vmx.c in the Linux kernel through 4.13.3 does not ensure that the "CR8-load exiting" and "CR8-store exiting" L0 vmcs02 controls exist in cases where L1 omits the "use TPR shadow" vmcs12 control, which allows KVM L2 guest OS users to obtain read and write access to the hardware CR8 register.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2017-09-26T05:00:00

Updated: 2024-08-05T18:28:16.642Z

Reserved: 2017-08-01T00:00:00

Link: CVE-2017-12154

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2017-09-26T05:29:00.277

Modified: 2024-11-21T03:08:56.653

Link: CVE-2017-12154

cve-icon Redhat

Severity : Important

Publid Date: 2017-09-12T00:00:00Z

Links: CVE-2017-12154 - Bugzilla