Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098883)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098883 advisory. In the Linux kernel, the following vulnerability has been resolved: KVM: Replace guest-triggerable BUGON in ioeventfd datamatch with getunaligned Drop a BUGON that h...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098682)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098682 advisory. In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Tear down vGIC on failed vCPU creation If kvmarchvcpucreate fails to share the vCPU...

CVE-2026-64562

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM nested virtualization nVMX feature. This vulnerability occurs because the shadow Virtual Machine Control Structure VMCS is freed prematurely while still being referenced. Due to asynchronous operations, a virtual CPU vCPU mig...

The vulnerability of the sev_pin_memory() function in the arch/x86/kvm/svm/sev.c module of the virtualization subsystem on the Linux kernel-based x86 platform allows a attacker to cause a service failure.

The vulnerability of the sevpinmemory function in the arch/x86/kvm/svm/sev.c module of the virtualization subsystem on the Linux kernel-based x86 platform is related to a potential integer overflow. Exploiting this vulnerability could allow an attacker to cause a service failure...

The vulnerability of the kvm_get_vcpu_by_cpuid() function in the arch/loongarch/kvm/vpu.c module, which is part of the LoongArch architecture support for the Linux operating system, allows a attacker to compromise the confidentiality, integrity, and accessibility of the protected information.

The vulnerability of the kvmgetvcpubycpuid function in the arch/loongarch/kvm/vpu.c module, which is part of the LoongArch architecture support for the Linux operating system, relates to the execution of operations beyond the buffer boundaries in memory. Exploiting this vulnerability could allow ...

The vulnerability of the sev_mem_enc_register_region() function in the arch/x86/kvm/svm/sev.c module of the virtualization subsystem on the x86 kernel of the Linux operating system allows a attacker to cause a service failure.

The vulnerability of the sevmemencregisterregion function in the arch/x86/kvm/svm/sev.c module of the virtualization subsystem on the x86 kernel of the Linux operating system is related to improper locking of resources. Exploiting this vulnerability could allow an attacker to cause a service...

The vulnerability of the sev_es_sync_vmsa() function in the arch/x86/kvm/svm/sev.c module of the virtualization subsystem on the Linux kernel-based x86 platform allows a attacker to cause a service failure.

The vulnerability of the sevessyncvmsa function in the arch/x86/kvm/svm/sev.c module of the virtualization subsystem on the Linux kernel-based x86 platform is related to synchronization errors. Exploiting this vulnerability can allow an attacker to cause a service failure...

Important: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerabilit...

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

A flaw was found in the Kernel-based Virtual Machine KVM for x86. This vulnerability occurs when KVM incorrectly re-checks Level 1 L1 intercepts during the completion of userspace I/O emulation for a Level 2 L2 instruction. If the L1 or host userspace modifies I/O interception settings during thi...

qemu-kvm security, bug fix, and enhancement update

An update is available for qemu-kvm. This update affects Rocky Linux 10. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list Kernel-based Virtual Machine KVM is a full virtualization solution for Linu...

RLSA-2026:58571 Moderate: qemu-kvm security, bug fix, and enhancement update

Kernel-based Virtual Machine KVM is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm packages provide the user-space component for running virtual machines that use KVM. Security Fixes: qemu-kvm: Heap buffer overflow in virtio-blk SCSI request handling...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Warns when a triple fault assertion never “escapes” from L2 The warnings are removed because they perform a sanity check that ensures KVM never allows a triple fault in L2 to escape and end up in L1. In normal operation...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: mmmremap.c: Avoid unnecessary calls to invalidrangestart/invalidaterangeend when using mremap with oldsize=0. If the mremap system call with oldsize=0 ends up in movepagetables, it will unnecessarily call...

Astra Linux - Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: KVM: PPC: Fix kvmarchvcpuioctl vcpuload leak vcpuput is not called if the user copy fails. This can result in preemption notifier corruption and crashes, among other issues...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Loads the TSC multiplier of L1 based on L1’s state, not L2’s state. When emulating a nested VM-Exit, the TSC multiplier of L1 is loaded if L1’s desired ratio does not match the current ratio. This does not occur if L1’...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: KVM: PPC: Book3S HV: Fixed stack handling in idlekvmstartguest In commit 10d91611f426 “powerpc/64s: Reimplemented the book3s idle code in C”, kvmstartguest became idlekvmstartguest. The old code allocated a stack frame on the...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: KVM: x86: Reject Hyper-V’s SENDIPI hypercalls if the local APIC is not part of the kernel. Advertise support for Hyper-V’s SENDIPI and SENDIPIEX hypercalls only if the local API is emulated/virtualized by KVM. Also, explicitly...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: Fixed memory accounting for pinned/unpinned pages The accountmem and unaccountmem functions call getuid, which increments the reference count of struct userstruct on every invocation. However, we do not decrement...

RHSA-2026:58571 Red Hat Security Advisory: qemu-kvm security, bug fix, and enhancement update

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CVE-2026-74607

A flaw was found in the Kernel-based Virtual Machine KVM Secure Virtual Machine SVM module within the Linux kernel. This vulnerability involves a race condition during the management of encrypted virtual machine contexts, specifically when handling owner and mirror lists. A privileged user or...