| Revision Date: | 2017-09-26 | Version: | 1 | | Title: | CVE-2017-12154 on Ubuntu 18.04 LTS (bionic) - medium. | | Description: | 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. It was discovered that the nested KVM implementation in the Linux kernel in some situations did not properly prevent second level guests from reading and writing the hardware CR8 register. A local attacker in a guest could use this to cause a denial of service (system crash).
| | Family: | unix | Class: | vulnerability | | Status: | | Reference(s): | CVE-2017-12154
| | Platform(s): | Ubuntu 18.04 LTS
| Product(s): | | | Definition Synopsis | | Ubuntu 18.04 LTS (bionic) is installed. AND Package Information
linux package in bionic, is related to the CVE in some way and has been fixed (note: '4.13.0-17.20').
OR linux-aws package in bionic, is related to the CVE in some way and has been fixed (note: '4.15.0-1001.1').
OR linux-azure package in bionic, is related to the CVE in some way and has been fixed (note: '4.15.0-1002.2').
OR linux-gcp package in bionic, is related to the CVE in some way and has been fixed (note: '4.15.0-1001.1').
OR linux-kvm package in bionic, is related to the CVE in some way and has been fixed (note: '4.15.0-1002.2').
OR linux-meta package in bionic, is related to the CVE in some way and has been fixed (note: '4.13.0-17.20').
OR linux-meta-aws package in bionic, is related to the CVE in some way and has been fixed (note: '4.15.0-1001.1').
OR linux-meta-azure package in bionic, is related to the CVE in some way and has been fixed (note: '4.15.0-1002.2').
OR linux-meta-gcp package in bionic, is related to the CVE in some way and has been fixed (note: '4.15.0-1001.1').
OR linux-meta-kvm package in bionic, is related to the CVE in some way and has been fixed (note: '4.15.0-1002.2').
OR linux-meta-oem package in bionic, is related to the CVE in some way and has been fixed (note: '4.15.0-1002.3').
OR linux-meta-raspi2 package in bionic, is related to the CVE in some way and has been fixed (note: '4.13.0-1006.6').
OR linux-oem package in bionic, is related to the CVE in some way and has been fixed (note: '4.15.0-1002.3').
OR linux-raspi2 package in bionic, is related to the CVE in some way and has been fixed (note: '4.13.0-1006.6').
OR linux-signed package in bionic, is related to the CVE in some way and has been fixed (note: '4.13.0-17.20').
OR linux-signed-azure package in bionic, is related to the CVE in some way and has been fixed (note: '4.15.0-1002.2').
OR linux-signed-gcp package in bionic, is related to the CVE in some way and has been fixed (note: '4.15.0-1001.1').
OR linux-signed-oem package in bionic, is related to the CVE in some way and has been fixed (note: '4.15.0-1002.3').
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