kernel: KVM: nSVM: Always use vmcb01 in VMLOAD/VMSAVE emulation

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM nSVM module. When a nested virtual machine L2 guest executes VMSAVE/VMLOAD instructions, and these are not intercepted by the first-level hypervisor L1, KVM incorrectly uses vmcb02 instead of vmcb01 for managing guest state...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM – Always use vmcb01 in VMLOAD/VMSAVE emulation The commit cc3ed80ae69f states that “KVM: nSVM – always use vmcb01 for vmsave/vmload of guest state”. This commit ensured that KVM always used vmcb01 for the fields...

CVE-2026-43133

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Always use vmcb01 in VMLOAD/VMSAVE emulation Commit cc3ed80ae69f "KVM: nSVM: always use vmcb01 to for vmsave/vmload of guest state" made KVM always use vmcb01 for the fields controlled by VMSAVE/VMLOAD, but it missed...

Linux Distros Unpatched Vulnerability : CVE-2026-43133

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - KVM: nSVM: Always use vmcb01 in VMLOAD/VMSAVE emulation Commit cc3ed80ae69f KVM: nSVM: always use vmcb01 to for vmsave/vmload of guest state made KVM always use...