CVE-2026-46014

In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Add missing save/restore handling of LBR MSRs MSRIA32DEBUGCTLMSR and LBR MSRs are currently not enumerated by KVMGETMSRINDEXLIST, and LBR MSRs cannot be set with KVMSETMSRS. So save/restore is completely broken. Fix it ...

CVE-2026-46071

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Avoid clearing VMCBLBR in vmcb12 svmcopylbrs always marks VMCBLBR dirty in the destination VMCB. However, nestedsvmvmexit uses it to copy LBRs to vmcb12, and clearing clean bits in vmcb12 is not architecturally defined...

CVE-2026-46071

CVE-2026-46071 concerns Linux kernel KVM/nSVM behavior where svm_copy_lbrs() marks VMCB_LBR dirty, and nested_svm_vmexit() copies LBRs to vmcb12; clearing VMCB_LBR dirty bits in vmcb12 was not architecturally defined. The fix moves vmcb_mark_dirty() back to callers and drops it for vmcb12, enabli...

PT-2026-43938

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the KVM nSVM component where the svm copy lbrs function always marks VMCB LBR as dirty in the destination VMCB. Because nested svm vmexit uses this to copy Last Branch...

Linux Distros Unpatched Vulnerability : CVE-2026-46014

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - KVM: SVM: Add missing save/restore handling of LBR MSRs MSRIA32DEBUGCTLMSR and LBR MSRs are currently not enumerated by KVMGETMSRINDEXLIST, and LBR MSRs cannot ...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: KVM: x86/pmu: Disabled support for adaptive PEBS. Support for virtualizing adaptive PEBS has been discontinued. This is because KVM’s implementation is architecturally broken without an obvious or easy way to address this issu...

UBUNTU-CVE-2022-49565

In the Linux kernel, the following vulnerability has been resolved: perf/x86/intel/lbr: Fix unchecked MSR access error on HSW The fuzzer triggers the below trace. 7763.384369 unchecked MSR access error: WRMSR to 0x689 tried to write 0x1fffffff8101349e at rIP: 0xffffffff810704a4...

SUSE CVE-2024-26992

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/pmu: Disable support for adaptive PEBS Drop support for virtualizing adaptive PEBS, as KVM's implementation is architecturally broken without an obvious/easy path forward, and because exposing adaptive PEBS can leak host...

DEBIAN-CVE-2024-26992

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/pmu: Disable support for adaptive PEBS Drop support for virtualizing adaptive PEBS, as KVM's implementation is architecturally broken without an obvious/easy path forward, and because exposing adaptive PEBS can leak host...