PT-2026-34945

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the KVM component regarding SEV Secure Encrypted Virtualization. The system fails to reject attempts to synchronize the vCPU state to its associated VMSA Virtual Machi...

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

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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

The Linux kernel contains a vulnerability within the KVM subsystem related to x86/mmu shadow page table entry handling. Specifically, the system fails to drop/zap existing present SPTEs before installing emulated MMIO SPTEs when host userspace modifies a shadowed gPTE to switch from a memslot to ...

PT-2026-34905

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the KVM arm64 component within the kvm at swap desc function. The software incorrectly calculates the virtual addresses of S1/S2 descriptors by using u64 user hva +...

The vulnerability of the kvm_ioctl_create_device() function in the virt/kvm/kvm_main.c module of the KVM subsystem of the Linux operating system allows a hacker to cause a service failure.

The vulnerability of the kvmioctlcreatedevice function in the virt/kvm/kvmmain.c module of the KVM subsystem of the Linux operating system is related to the assignment of a NULL pointer. Exploiting this vulnerability could allow an attacker to cause a service failure...

PT-2026-29485

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 7.0.0-rc2-eafebd2d2ab0-sink-vm 319 Description The Linux kernel contains a flaw within the KVM component related to memory management. Specifically, the issue involves an incorrect sanity check when overwriting a...

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...

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-2026-23028 LoongArch: KVM: Fix kvm_device leak in kvm_ipi_destroy()

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...

EUVD-2026-5066

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...