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...

Astra Linux - уязвимость в linux-5.15

In the Linux kernel, the following vulnerability has been resolved: KVM: VMX – Prevent RSB underflow before vmenter On VMX, there is some timing balance between the time the guest’s SPECCTRL value is written and the vmenter. Balanced returns matched by a preceding call are usually acceptable...

CVE-2026-23402

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM module. This vulnerability allows a host user to bypass KVM's memory management rules by overwriting critical memory structures. This can lead to a compromise of the virtual machine's memory integrity, potentially causing...

Security Bulletin: Multiple Vulnerabilities of IBM Java SDK affect Linux KVM Agent from IBM Tivoli Monitoring for Virtual Environments

Summary IBM java SDK is used by Linux KVM Agent from IBM Tivoli Monitoring for Virtual Environments. Vulnerability Details CVEID:CVE-2026-21945 DESCRIPTION: Java SE is vulnerable to a denial of service, caused by an easily exploitable vulnerability issue that allows an remote attacker to cause a...

CVE-2025-71104

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Fix VM hard lockup after prolonged inactivity with periodic HV timer When advancing the target expiration for the guest's APIC timer in periodic mode, set the expiration to "now" if the target expiration is in the past...

KVM: x86: use array_index_nospec with indices that come from guest

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KVM: arm64: Fix circular locking dependency

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Moderate: Red Hat Security Advisory: virt:rhel and virt-devel:rhel security update

An update for the virt:rhel and virt-devel:rhel module is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service. Red Hat Product Security has rated this update as having a security impact of Moderate. A...

RLSA-2025:4492 Moderate: qemu-kvm security 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: virtio-net: stack buffer overflow in virtionetflushtx CVE-2023-6693...

RLSA-2024:6964 Moderate: virt:rhel and virt-devel:rhel security update

Kernel-based Virtual Machine KVM offers a full virtualization solution forLinux on numerous hardware platforms. The virt:rhel module contains packageswhich provide user-space components used to run virtual machines using KVM.The packages also provide APIs for managing and interacting with the...

Important: Red Hat Security Advisory: virtuoso-opensource security update

An update for virtuoso-opensource is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is...

RHEL 7 : virtuoso-opensource (RHSA-2025:4039)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2025:4039 advisory. Kernel-based Virtual Machine KVM offers a full virtualization solution forLinux on numerous hardware platforms. The virt:rhel module contains...

RLSA-2024:9128 Moderate: libvirt security update

Kernel-based Virtual Machine KVM offers a full virtualization solution forLinux on numerous hardware platforms. The virt:rhel module contains packageswhich provide user-space components used to run virtual machines using KVM.The packages also provide APIs for managing and interacting with the...

libvirt security update

An update is available for libvirt. This update affects Rocky Linux 9. 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 offers a full virtualization solution forLin...

Important: Red Hat Security Advisory: python-virtualenv security update

An update for python-virtualenv is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is...

RHEL 9 : libvirt (RHSA-2024:9128)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2024:9128 advisory. Kernel-based Virtual Machine KVM offers a full virtualization solution forLinux on numerous hardware platforms. The virt:rhel module contains...

Moderate: qemu-kvm security 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: SR-IOV: improper validation of NumVFs leads to buffer overflow...

RHEL 8 : virt:rhel and virt-devel:rhel (RHSA-2024:6964)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:6964 advisory. Kernel-based Virtual Machine KVM offers a full virtualization solution forLinux on numerous hardware platforms. The virt:rhel module contain...

RHEL 6 : qemu-kvm-rhev (RHSA-2014:0434)

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2014:0434 advisory. KVM Kernel-based Virtual Machine is a full virtualization solution for Linux on AMD64 and Intel 64 systems. The qemu-kvm-rhev package provid...

kernel: KVM: SVM: WARN on vNMI + NMI window iff NMIs are outright masked

In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: WARN on vNMI + NMI window iff NMIs are outright masked When requesting an NMI window, WARN on vNMI support being enabled if and only if NMIs are actually masked, i.e. if the vCPU is already handling an NMI. KVM's ABI fo...