PT-2026-34944

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the KVM SEV component where the sev mem enc register region function is not fully protected by the kvm-lock. Because the sev guest function is unstable unless kvm-lock...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-013515)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013515 advisory. In the Linux kernel, the following vulnerability has been resolved: x86/fpu: KVM: Set the base guest FPU uABI size to sizeofstruct kvmxsave Set the starting uABI siz...

CVE-2026-23425

A flaw was found in the Linux kernel's KVM Kernel-based Virtual Machine for ARM64 architectures. This vulnerability arises from improper initialization of ID registers for non-protected pKVM protected KVM guests. A malicious guest operating system could exploit this by causing the hypervisor, the...

CVE-2026-23425

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Fix ID register initialization for non-protected pKVM guests In protected mode, the hypervisor maintains a separate instance of the kvm structure for each VM. For non-protected VMs, this structure is initialized from...

CVE-2026-23425

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Fix ID register initialization for non-protected pKVM guests In protected mode, the hypervisor maintains a separate instance of the kvm structure for each VM. For non-protected VMs, this structure is initialized from...

UBUNTU-CVE-2026-23425

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Fix ID register initialization for non-protected pKVM guests In protected mode, the hypervisor maintains a separate instance of the kvm structure for each VM. For non-protected VMs, this structure is initialized from...

KVM: x86/mmu: Drop/zap existing present SPTE even when creating an MMIO SPTE

...

CVE-2026-23402

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Only WARN in direct MMUs when overwriting shadow-present SPTE Adjust KVM's sanity check against overwriting a shadow-present SPTE with a another SPTE with a different target PFN to only apply to direct MMUs, i.e. on...

CVE-2026-23402 KVM: x86/mmu: Only WARN in direct MMUs when overwriting shadow-present SPTE

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Only WARN in direct MMUs when overwriting shadow-present SPTE Adjust KVM's sanity check against overwriting a shadow-present SPTE with a another SPTE with a different target PFN to only apply to direct MMUs, i.e. on...

CVE-2026-23401

CVE-2026-23401: In the Linux kernel KVM x86/mmu, a race allowed installing an MMIO SPTE without first zapping an existing shadow-present SPTE when guest memory writes occurred outside KVM’s scope. This could enable a guest‑memory–related fault to leave a shadow SPTE intact when an MMIO SPTE is in...

PT-2026-29485

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Only WARN in direct MMUs when overwriting shadow-present SPTE Adjust KVM's sanity check against overwriting a shadow-present SPTE with a another SPTE with a different target PFN to only apply to direct MMUs, i.e. on...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-005415)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005415 advisory. In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Flush pages under kvm-lock to fix UAF in svmregisterencregion Do the cache flush of...

CVE-2026-0665

An off-by-one error was found in QEMU's KVM Xen guest support. A malicious guest could use this flaw to trigger out-of-bounds heap accesses in the QEMU process via the emulated Xen physdev hypercall interface, leading to a denial of service or potential memory corruption...

QEMU 安全漏洞

QEMU Quick Emulator is a simulation software for processors developed by Fabrice Bellard from France. This software features high speed and cross-platform capabilities. QEMU has a security vulnerability, which stems from a minor error in the KVM Xen client support. This error may lead to...

SUSE CVE-2026-23198

In the Linux kernel, the following vulnerability has been resolved: KVM: Don't clobber irqfd routing type when deassigning irqfd When deassigning a KVMIRQFD, don't clobber the irqfd's copy of the IRQ's routing entry as doing so breaks kvmarchirqbypassdelproducer on x86 and arm64, which explicitly...

CVE-2026-23198 KVM: Don't clobber irqfd routing type when deassigning irqfd

In the Linux kernel, the following vulnerability has been resolved: KVM: Don't clobber irqfd routing type when deassigning irqfd When deassigning a KVMIRQFD, don't clobber the irqfd's copy of the IRQ's routing entry as doing so breaks kvmarchirqbypassdelproducer on x86 and arm64, which explicitly...

SUSE CVE-2026-23027

In the Linux kernel, the following vulnerability has been resolved: LoongArch: KVM: Fix kvmdevice leak in kvmpchpicdestroy In kvmioctlcreatedevice, kvmdevice has allocated memory, kvmdevice-destroy seems to be supposed to free its kvmdevice struct, but kvmpchpicdestroy is not currently doing this...

CVE-2026-23028

In the Linux kernel, the following vulnerability has been resolved: LoongArch: KVM: Fix kvmdevice leak in kvmipidestroy In kvmioctlcreatedevice, kvmdevice has allocated memory, kvmdevice-destroy seems to be supposed to free its kvmdevice struct, but kvmipidestroy is not currently doing this, that...

UBUNTU-CVE-2026-23028

In the Linux kernel, the following vulnerability has been resolved: LoongArch: KVM: Fix kvmdevice leak in kvmipidestroy In kvmioctlcreatedevice, kvmdevice has allocated memory, kvmdevice-destroy seems to be supposed to free its kvmdevice struct, but kvmipidestroy is not currently doing this, that...

CVE-2026-23029 LoongArch: KVM: Fix kvm_device leak in kvm_eiointc_destroy()

In the Linux kernel, the following vulnerability has been resolved: LoongArch: KVM: Fix kvmdevice leak in kvmeiointcdestroy In kvmioctlcreatedevice, kvmdevice has allocated memory, kvmdevice-destroy seems to be supposed to free its kvmdevice struct, but kvmeiointcdestroy is not currently doing...