CVE-2026-43483

In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Set/clear CR8 write interception when AVIC is deactivated Explicitly set/clear CR8 write interception when AVIC is deactivated to fix a bug where KVM leaves the interception enabled after AVIC is activated. E.g. if KVM...

CVE-2026-43483

In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Set/clear CR8 write interception when AVIC is deactivated Explicitly set/clear CR8 write interception when AVIC is deactivated to fix a bug where KVM leaves the interception enabled after AVIC is activated. E.g. if KVM...

CVE-2026-43483

CVE-2026-43483 (Linux kernel, KVM/VMX-SVM) fixes a flaw in SVM AVIC handling where CR8 write interception could remain enabled after AVIC activation. The patch explicitly sets/clears CR8 interception when AVIC is (de)activated to prevent the dangling intercept, which could cause TPR desynchroniza...

kernel: Linux kernel KVM: Privilege escalation or denial of service due to improper shadow page table entry handling

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM component. A local attacker with privileges on the host system could exploit a vulnerability in how KVM handles shadow page table entries SPTEs during memory-mapped I/O MMIO operations. By manipulating guest page table entrie...

CVE-2026-25077

Account users are allowed by default to register templates to be downloaded directly to the primary storage for deploying instances using the KVM hypervisor. Due to missing file name sanitization, an attacker can register malicious templates to execute arbitrary code on the KVM hosts. This can...

CVE-2026-25077

CVE-2026-25077 affects Apache CloudStack with KVM deployments. Due to missing file name sanitization, account users can register templates for direct download to primary storage, enabling an attacker to execute arbitrary code on KVM hosts. This can compromise resource integrity and confidentialit...

CVE-2026-43133 KVM: nSVM: Always use vmcb01 in VMLOAD/VMSAVE emulation

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...

KVM: SEV: Drop WARN on large size for KVM_MEMORY_ENCRYPT_REG_REGION

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CVE-2026-23029

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 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...

MiracleLinux 4 : qemu-kvm-0.12.1.2-2.491.AXS4.1 (AXSA:2016-444:02)

The remote MiracleLinux 4 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2016-444:02 advisory. KVM for Kernel-based Virtual Machine is a full virtualization solution for Linux on x86 hardware. Using KVM, one can run multiple virtual machines running...

MiracleLinux 4 : qemu-kvm-0.12.1.2-2.479.AXS4.2 (AXSA:2015-518:06)

The remote MiracleLinux 4 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2015-518:06 advisory. KVM for Kernel-based Virtual Machine is a full virtualization solution for Linux on x86 hardware. Using KVM, one can run multiple virtual machines running...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000879)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000879 advisory. The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a denial of service host OS panic or hang by...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002707)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002707 advisory. The x86decodeinsn function in arch/x86/kvm/emulate.c in the Linux kernel before 4.8.7, when KVM is enabled, allows local users to cause a denial of service host OS...

PT-2025-52981

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Linux kernel contains a flaw related to KVM Kernel-based Virtual Machine coalesced MMIO Memory Mapped I/O unregistration. Specifically, the target device is not properly destroyed an...

CVE-2025-40184

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Fix debug checking for np-guests using huge mappings When running with transparent huge pages and CONFIGNVHEEL2DEBUG then the debug checking in asserthostsharedguest fails on the launch of an np-guest. This WARNON...

KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O

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KVM: SVM: Skip fastpath emulation on VM-Exit if next RIP isn't valid

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CVE-2025-40038

In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Skip fastpath emulation on VM-Exit if next RIP isn't valid Skip the WRMSR and HLT fastpaths in SVM's VM-Exit handler if the next RIP isn't valid, e.g. because KVM is running with nrips=false. SVM must decode and emulate...

CVE-2025-40038

In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Skip fastpath emulation on VM-Exit if next RIP isn't valid Skip the WRMSR and HLT fastpaths in SVM's VM-Exit handler if the next RIP isn't valid, e.g. because KVM is running with nrips=false. SVM must decode and emulate...