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...

CVE-2026-0665 Qemu-kvm: heap off-by-one in kvm xen physdevop_map_pirq

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...

CVE-2026-0665: Out-of-bounds Write

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...

Linux Distros Unpatched Vulnerability : CVE-2011-2519

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Xen in the Linux kernel, when running a guest on a host without hardware assisted paging HAP, allows guest users to cause a denial of service invalid pointer...

Fedora: Security Advisory (FEDORA-2026-e39149a8a0)

The remote host is missing an update for the 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...

[SECURITY] Fedora 42 Update: xen-4.19.4-2.fc42

This package contains the XenD daemon and xm command line tools, needed to manage virtual machines running under the Xen hypervisor...

OESA-2026-1354 qemu security update

QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed. Security Fixes: 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...

OESA-2026-1355 qemu security update

QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed. Security Fixes: 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...

OESA-2026-1352 qemu security update

QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed. Security Fixes: An "off by one" bug has been discovered in QEMU's KVM Xen guest support. A malicious client could exploit this vulnerability to trigger an out-of-bounds heap access in the QEMU process vi...

OESA-2026-1351 qemu security update

QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed. Security Fixes: 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...

PT-2026-43757

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw in the xen-netback component allows a malicious or buggy Xen guest to cause a guest-to-host denial of service on systems where panic on warn is set to 1. The issue occurs because...

SUSE SLED15: qemu / qemu-SLOF / qemu-accel-qtest / qemu-accel-tcg-x86 / qemu-arm / etc (SUSE-SU-2026:0445-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2026:0445-1 advisory. - CVE-2026-0665: Added PIRQ bounds check in xenphysdevmappirq to avoid an out-of-bounds heap. bsc1256484 Other fixes: -...

Security update for qemu

This update for qemu fixes the following issues: CVE-2026-0665: Added PIRQ bounds check in xenphysdevmappirq to avoid an out-of-bounds heap. bsc1256484 Other fixes: Fixed that QEMU migration fails if a qemu-vdagent channel is present in the VM bsc1257474 Patch Instructions: To install this SUSE...

The vulnerability of the dmabufexp_from_pages() function in the drivers/xen/gntdev-dmabuf.c driver code of the Linux kernel’s page buffer device driver allows a attacker to cause a service failure.

The vulnerability of the dmabufexpfrompages function in the drivers/xen/gntdev-dmabuf.c driver for Linux kernel-based device buffer devices is related to the reutilization of previously released memory. Exploiting this vulnerability could allow an attacker to cause a service failure...

Security update for xen

This update for xen fixes the following issues: Security fixes: CVE-2025-58150: Fixed buffer overrun with shadow paging and tracing XSA-477 bsc1256745 CVE-2026-23553: Fixed incomplete IBPB for vCPU isolation XSA-479 bsc1256747 CVE-2025-58149: Fixed incorrect removal od permissions on PCI device...

SUSE-SU-2026:0394-1 Security update for xen

This update for xen fixes the following issues: Security fixes: - CVE-2025-58150: Fixed buffer overrun with shadow paging and tracing XSA-477 bsc1256745 - CVE-2026-23553: Fixed incomplete IBPB for vCPU isolation XSA-479 bsc1256747 - CVE-2025-58149: Fixed incorrect removal od permissions on PCI...

CVE-2026-23087

In the Linux kernel, the following vulnerability has been resolved: scsi: xen: scsiback: Fix potential memory leak in scsibackremove Memory allocated for struct vscsiblkinfo in scsibackprobe is not freed in scsibackremove leading to potential memory leaks on remove, as well as in the scsibackprob...

UBUNTU-CVE-2026-23087

In the Linux kernel, the following vulnerability has been resolved: scsi: xen: scsiback: Fix potential memory leak in scsibackremove Memory allocated for struct vscsiblkinfo in scsibackprobe is not freed in scsibackremove leading to potential memory leaks on remove, as well as in the scsibackprob...

CVE-2026-23087

In the Linux kernel, the following vulnerability has been resolved: scsi: xen: scsiback: Fix potential memory leak in scsibackremove Memory allocated for struct vscsiblkinfo in scsibackprobe is not freed in scsibackremove leading to potential memory leaks on remove, as well as in the scsibackprob...