The vulnerability of the HSTATE_HOST_R1 component of the Kernel-based Virtual Machine (KVM) virtualization subsystem in Linux operating systems allows a attacker to cause a service failure.

The vulnerability of the HSTATEHOSTR1 component of the Linux Kernel-Based Virtual Machine KVM virtualization subsystem arises due to synchronization errors when using shared resources. Exploiting this vulnerability can allow an attacker to cause a service failure...

UBUNTU-CVE-2020-8834

KVM in the Linux kernel on Power8 processors has a conflicting use of HSTATEHOSTR1 to store r1 state in kvmppchventry plus in kvmppcsave,restoretm, leading to a stack corruption. Because of this, an attacker with the ability run code in kernel space of a guest VM can cause the host kernel to pani...