The vulnerability of the paging64_cmpxchg_gpte() function in the arch/x86/kvm/mmu/paging_tmpl.h subsystem of the virtualization subsystem on the Linux kernel-based x86 platform allows a attacker to cause a service failure.

The vulnerability of the paging64cmpxchggpte function in the arch/x86/kvm/mmu/pagingtmpl.h subsystem of the virtualization subsystem on the Linux x86 kernel platform is related to the use of insufficiently random values. Exploiting this vulnerability could allow an attacker to cause a service...

SUSE-SU-2026:20880-1 Security update for the Linux Kernel (Live Patch 5 for SUSE Linux Enterprise Micro 6.0)

This update for the SUSE Linux Enterprise Kernel 6.4.0-25.1 fixes various security issues The following security issues were fixed: - CVE-2025-21738: ata: libata-sff: ensure that we cannot write outside the allocated buffer bsc1257118. - CVE-2025-38159: wifi: rtw88: fix the 'para' buffer size to...

RLSA-2026:5578 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...

qemu-kvm: VNC WebSocket handshake use-after-free

A flaw was found in QEMU. If the QIOChannelWebsock object is freed while it is waiting to complete a handshake, a GSource is leaked. This can lead to the callback firing later on and triggering a use-after-free in the use of the channel. This can be abused by a malicious client with network acces...

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. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is availab...

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...

CVE-2026-23554

A flaw was found in Xen. An optimization in the Intel Extended Page Table EPT paging code, used by Xen, defers flushing cached EPT state. However, the freeing of paging structures is not similarly deferred. This can result in freed memory pages remaining in the cached state, allowing stale entrie...

ALPINE-CVE-2026-23555

Any guest issuing a Xenstore command accessing a node using the illegal node path "/local/domain/", will crash xenstored due to a clobbered error indicator in xenstored when verifying the node path. Note that the crash is forced via a failing assert statement in xenstored. In case xenstored is...

CTF As a Service: A Reproducible and Scalable Infrastructure for Cybersecurity Training

Capture The Flag CTF competitions have established themselves as a highly effective pedagogical tool in cybersecurity education, offering students hands-on experience in realistic attack and defense scenarios. However, organizing and hosting these events requires considerable infrastructure effor...

PT-2026-34913

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the x86 CPU handling where the X86 CR4 FRED bit was included in the CR4 pinned bits mask. During boot, FRED is initialized on the Bootstrap Processor BSP and...

Huawei EulerOS: Security Advisory for curl (EulerOS-SA-2026-1635)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2026 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Huawei EulerOS: Security Advisory for qemu (EulerOS-SA-2026-1644)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2026 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Huawei EulerOS: Security Advisory for curl (EulerOS-SA-2026-1627)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2026 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

RLSA-2023:6980 Moderate: virt:rhel and virt-devel:rhel security, bug fix, and enhancement update

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

virt:rhel and virt-devel:rhel security, bug fix, and enhancement update

An update is available for seabios, swtpm, perl-Sys-Virt, module.supermin, module.libiscsi, module.libvirt-dbus, libvirt-dbus, module.swtpm, module.virt-v2v, module.sgabios, module.perl-Sys-Virt, libvirt-python, module.libvirt-python, netcf, module.netcf, module.seabios, module.libguestfs, hivex,...

EulerOS Virtualization 2.13.0 : unbound (EulerOS-SA-2026-1632)

According to the versions of the unbound packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : NLnet Labs Unbound up to and including version 1.24.0 is vulnerable to possible domain hijack attacks. Promiscuous NS RRSets that...

EulerOS Virtualization 2.13.1 : python-pip (EulerOS-SA-2026-1640)

According to the versions of the python-pip packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : When extracting a tar archive pip may not check symbolic links point into the extraction directory if the tarfile module doesn'...

EulerOS Virtualization 2.13.0 : python-pip (EulerOS-SA-2026-1631)

According to the versions of the python-pip packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : When extracting a tar archive pip may not check symbolic links point into the extraction directory if the tarfile module doesn'...

EulerOS Virtualization 2.13.1 : qemu (EulerOS-SA-2026-1641)

According to the versions of the qemu packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : A stack-based buffer overflow was found in the QEMU e1000 network device. The code for padding short frames was dropped from individu...

EulerOS Virtualization 2.13.0 : qemu (EulerOS-SA-2026-1644)

According to the versions of the qemu packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : A stack-based buffer overflow was found in the QEMU e1000 network device. The code for padding short frames was dropped from individu...