CVE-2026-89958

This vulnerability affects the Linux kernel 's s390/vfio-ap driver. The root cause is a NULL pointer dereference : the vfio_ap_on_cfg_changed and vfio_ap_on_scan_complete callback functions acquire the matrix_mdev->kvm->lock mutex without first checking whether matrix_mdev->kvm is NULL. ...

EUVD-2026-80558

In the Linux kernel, the following vulnerability has been resolved: s390/vfio-ap: Fix dereference matrixmdev-kvm without checking for NULL The apdriver structure has two fields which are function pointers to callbacks: .onconfigchanged: called at the start of the AP bus scan function to notify th...

CVE-2026-89958 s390/vfio-ap: Fix dereference matrix_mdev->kvm without checking for NULL

In the Linux kernel, the following vulnerability has been resolved: s390/vfio-ap: Fix dereference matrixmdev-kvm without checking for NULL The apdriver structure has two fields which are function pointers to callbacks: .onconfigchanged: called at the start of the AP bus scan function to notify th...

EUVD-2026-80531

In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Ensure KVMREQGETNESTEDSTATEPAGES is cleared on VM-Exit Always check and clear KVMREQGETNESTEDSTATEPAGES when emulating a nested VM-Exit to ensure the request is cleared, even when KVM was built with CONFIGKVMHYPERV=n, ...

CVE-2026-89932 KVM: nVMX: Always flush vpid02 on first use

In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Always flush vpid02 on first use Make sure vpid02 is always flushed on first use by setting lastvpid=0 when allocating vpid02. nestedvmxtransitiontlbflush will always detect a VPID change on first VM-Enter after VMXON,...

CVE-2026-89932 KVM: nVMX: Always flush vpid02 on first use

In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Always flush vpid02 on first use Make sure vpid02 is always flushed on first use by setting lastvpid=0 when allocating vpid02. nestedvmxtransitiontlbflush will always detect a VPID change on first VM-Enter after VMXON,...

CVE-2026-89931 KVM: nVMX: Ensure KVM_REQ_GET_NESTED_STATE_PAGES is cleared on VM-Exit

In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Ensure KVMREQGETNESTEDSTATEPAGES is cleared on VM-Exit Always check and clear KVMREQGETNESTEDSTATEPAGES when emulating a nested VM-Exit to ensure the request is cleared, even when KVM was built with CONFIGKVMHYPERV=n, ...

CVE-2026-89931

CVE-2026-89931 affects the Linux kernel's KVM nVMX (nested virtualization) subsystem. The root cause is that the KVM_REQ_GET_NESTED_STATE_PAGES flag is not reliably cleared when emulating a nested VM-Exit, specifically when KVM is built with CONFIG_KVM_HYPERV=n . Because KVM implicitly relies on ...

CVE-2026-89932

CVE-2026-89932 affects the Linux kernel's KVM nested VMX (nVMX) subsystem. The root cause is that the last_vpid variable is not reset to 0 when the L2 VPID (vpid02) is freed on VMXOFF. If KVM subsequently reuses a VPID that still has stale TLB entries on the physical CPU from a previous vCPU or a...

EUVD-2026-80532

In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Always flush vpid02 on first use Make sure vpid02 is always flushed on first use by setting lastvpid=0 when allocating vpid02. nestedvmxtransitiontlbflush will always detect a VPID change on first VM-Enter after VMXON,...

CVE-2026-89931 KVM: nVMX: Ensure KVM_REQ_GET_NESTED_STATE_PAGES is cleared on VM-Exit

In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Ensure KVMREQGETNESTEDSTATEPAGES is cleared on VM-Exit Always check and clear KVMREQGETNESTEDSTATEPAGES when emulating a nested VM-Exit to ensure the request is cleared, even when KVM was built with CONFIGKVMHYPERV=n, ...

CVE-2026-89930 KVM: nVMX: Service local TLB flushes on failed nested VM-Enter

In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Service local TLB flushes on failed nested VM-Enter KVM services local TLB flushes on "full" nested VM-Exits through nestedvmxvmexit, but not if a nested VM-Enter fails e.g. due to failed VMCS checks in...

CVE-2026-89930 KVM: nVMX: Service local TLB flushes on failed nested VM-Enter

In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Service local TLB flushes on failed nested VM-Enter KVM services local TLB flushes on "full" nested VM-Exits through nestedvmxvmexit, but not if a nested VM-Enter fails e.g. due to failed VMCS checks in...

CVE-2026-89930

CVE-2026-89930 affects the Linux kernel's KVM nVMX subsystem (nested virtualization). The root cause is that KVM failed to service local TLB flushes when a nested VM-Enter failed (e.g., due to failed VMCS checks in nested_vmx_enter_non_root_mode()). Specifically, a failed VM-Enter would update la...

EUVD-2026-80530

In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Service local TLB flushes on failed nested VM-Enter KVM services local TLB flushes on "full" nested VM-Exits through nestedvmxvmexit, but not if a nested VM-Enter fails e.g. due to failed VMCS checks in...

EUVD-2026-80528

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Consume the locked rmap value in the lockless rmap walk kvmrmaplock deliberately elides the rmap lock when it observes an empty rmap. In that case kvmrmaplockreadonly also re-enables preemption and returns zero, so...

CVE-2026-89929 KVM: nVM: Ensure INVVPID is emulated on the correct physical CPU

In the Linux kernel, the following vulnerability has been resolved: KVM: nVM: Ensure INVVPID is emulated on the correct physical CPU When emulating INVVPID, KVM executes INVVPID on the physical CPU using vpid02 instead of the L1 assigned VPID, after doing some validations on the operands. However...

CVE-2026-89928 KVM: x86/mmu: Consume the locked rmap value in the lockless rmap walk

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Consume the locked rmap value in the lockless rmap walk kvmrmaplock deliberately elides the rmap lock when it observes an empty rmap. In that case kvmrmaplockreadonly also re-enables preemption and returns zero, so...

CVE-2026-89929 KVM: nVM: Ensure INVVPID is emulated on the correct physical CPU

In the Linux kernel, the following vulnerability has been resolved: KVM: nVM: Ensure INVVPID is emulated on the correct physical CPU When emulating INVVPID, KVM executes INVVPID on the physical CPU using vpid02 instead of the L1 assigned VPID, after doing some validations on the operands. However...

EUVD-2026-80529

In the Linux kernel, the following vulnerability has been resolved: KVM: nVM: Ensure INVVPID is emulated on the correct physical CPU When emulating INVVPID, KVM executes INVVPID on the physical CPU using vpid02 instead of the L1 assigned VPID, after doing some validations on the operands. However...