kernel: kvm: vmx: host GDT limit corruption

A flaw was found in Linux kernel's KVM virtualization subsystem. The VMX code does not restore the GDT.LIMIT to the previous host value, but instead sets it to 64KB. With a corrupted GDT limit a host's userspace code has an ability to place malicious entries in the GDT, particularly to the per-cp...

UBUNTU-CVE-2018-10901

A flaw was found in Linux kernel's KVM virtualization subsystem. The VMX code does not restore the GDT.LIMIT to the previous host value, but instead sets it to 64KB. With a corrupted GDT limit a host's userspace code has an ability to place malicious entries in the GDT, particularly to the per-cp...

PT-2014-5417 · Linux +4 · Linux Kernel +4

Name of the Vulnerable Software and Affected Versions: Linux kernel versions through 3.17.2 Description: The WRMSR processing functionality in the KVM subsystem does not properly handle the writing of a non-canonical address to a model-specific register. This allows guest OS users to cause a deni...

PT-2014-5434 · Linux +3 · Linux Kernel +3

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 3.12 Description: The issue is related to the KVM subsystem in the Linux kernel, specifically in the arch/x86/kvm/vmx.c file. It does not have an exit handler for the INVEPT instruction, which allows guest OS...