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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade qemu | Jul 23, 2026 | Jul 23, 2026 |
| Oracle_linux | — | Upgrade libvirt-daemon-config-networkUpgrade libguestfs-toolsUpgrade libguestfs-gobjectUpgrade perl-hivexUpgrade superminUpgrade ruby-hivexUpgrade libvirt-daemon-driver-storage-rbdUpgrade swtpm-develUpgrade nbdkit-bash-completionUpgrade libvirt-dbusUpgrade qemu-kvm-coreUpgrade netcfUpgrade libvirt-daemon-driver-storage-logicalUpgrade netcf-libsUpgrade virt-v2v-man-pages-ukUpgrade libvirt-daemon-driver-interfaceUpgrade qemu-imgUpgrade swtpmUpgrade qemu-kvm-block-iscsiUpgrade libvirt-develUpgrade libvirt-daemon-driver-storage-scsiUpgrade libvirt-client-qemuUpgrade libtpms-develUpgrade libguestfs-java-develUpgrade nbdkit-example-pluginsUpgrade libguestfs-rsyncUpgrade nbdfuseUpgrade libvirt-daemon-kvmUpgrade libvirt-daemon-driver-secretUpgrade libvirt-daemon-driver-nwfilterUpgrade libguestfs-javaUpgrade hivexUpgrade virt-v2vUpgrade ruby-libguestfsUpgrade perl-Sys-VirtUpgrade nbdkit-curl-pluginUpgrade nbdkit-tmpdisk-pluginUpgrade seabios-binUpgrade libvirt-wiresharkUpgrade virt-dibUpgrade qemu-virtiofsdUpgrade nbdkit-gzip-filterUpgrade nbdkitUpgrade libvirt-docsUpgrade libvirt-daemon-driver-storage-diskUpgrade libguestfs-javadocUpgrade libvirt-libsUpgrade libguestfs-man-pages-jaUpgrade seavgabios-binUpgrade libguestfs-tools-cUpgrade qemu-kvm-commonUpgrade nbdkit-linuxdisk-pluginUpgrade nbdkit-ssh-pluginUpgrade libnbd-bash-completionUpgrade libiscsiUpgrade hivex-develUpgrade libguestfs-develUpgrade libvirt-daemon-driver-storage-mpathUpgrade libvirt-daemon-driver-storage-iscsi-directUpgrade libvirt-daemon-driver-storage-iscsiUpgrade libvirt-daemon-driver-storageUpgrade libvirt-daemon-config-nwfilterUpgrade libguestfs-gfs2Upgrade swtpm-tools-pkcs11Upgrade sgabios-binUpgrade sgabiosUpgrade netcf-develUpgrade nbdkit-nbd-pluginUpgrade python3-libguestfsUpgrade python3-hivexUpgrade python3-libnbdUpgrade nbdkit-tar-pluginUpgrade libguestfs-winsupportUpgrade libguestfs-applianceUpgrade qemu-kvm-block-glusterUpgrade qemu-guest-agentUpgrade libtpmsUpgrade libguestfs-inspect-iconsUpgrade nbdkit-serverUpgrade nbdkit-xz-filterUpgrade nbdkit-python-pluginUpgrade libguestfs-xfsUpgrade libguestfs-gobject-develUpgrade libvirt-daemon-driver-qemuUpgrade libvirt-daemonUpgrade libvirt-clientUpgrade libiscsi-develUpgrade seabiosUpgrade libvirt-daemon-driver-networkUpgrade qemu-kvmUpgrade nbdkit-tar-filterUpgrade libvirt-daemon-driver-storage-coreUpgrade libvirtUpgrade libnbdUpgrade libguestfs-bash-completionUpgrade nbdkit-vddk-pluginUpgrade nbdkit-basic-filtersUpgrade libiscsi-utilsUpgrade qemu-kvm-block-rbdUpgrade nbdkit-gzip-pluginUpgrade libvirt-daemon-driver-storage-glusterUpgrade libnbd-develUpgrade virt-v2v-bash-completionUpgrade swtpm-libsUpgrade qemu-kvm-device-usb-hostUpgrade libvirt-nssUpgrade libvirt-lock-sanlockUpgrade qemu-kvm-block-curlUpgrade nbdkit-basic-pluginsUpgrade libguestfs-rescueUpgrade qemu-kvm-block-sshUpgrade perl-Sys-GuestfsUpgrade libguestfsUpgrade virt-v2v-man-pages-jaUpgrade python3-libvirtUpgrade nbdkit-develUpgrade lua-guestfsUpgrade libvirt-daemon-driver-nodedevUpgrade libguestfs-man-pages-ukUpgrade swtpm-toolsUpgrade supermin-devel | Apr 28, 2026 | Jan 9, 2026 |
| Suse | — | Upgrade qemu-audio-spiceUpgrade qemu-audio-jackUpgrade qemu-ui-dbusUpgrade qemu-audio-dbusUpgrade qemu-hw-usb-smartcardUpgrade qemu-extraUpgrade qemu-vmsr-helperUpgrade qemu-hw-display-virtio-gpu-pciUpgrade qemu-langUpgrade qemu-toolsUpgrade qemu-hw-display-virtio-gpuUpgrade qemu-hw-display-qxlUpgrade qemu-x86Upgrade qemu-s390xUpgrade qemu-ivshmem-toolsUpgrade qemu-guest-agentUpgrade qemu-block-nfsUpgrade qemu-microvmUpgrade qemuUpgrade qemu-hw-s390x-virtio-gpu-ccwUpgrade qemu-vgabiosUpgrade qemu-ppcUpgrade qemu-headlessUpgrade qemu-block-sshUpgrade qemu-vhost-user-gpuUpgrade qemu-SLOFUpgrade qemu-chardev-baumUpgrade qemu-hw-usb-hostUpgrade qemu-block-rbdUpgrade qemu-accel-qtestUpgrade qemu-hw-display-virtio-vgaUpgrade qemu-accel-tcg-x86Upgrade qemu-spiceUpgrade qemu-hw-usb-redirectUpgrade qemu-block-iscsiUpgrade qemu-docUpgrade qemu-chardev-spiceUpgrade qemu-audio-pipewireUpgrade qemu-pr-helperUpgrade qemu-ui-cursesUpgrade qemu-ksmUpgrade qemu-ui-openglUpgrade qemu-ui-spice-appUpgrade qemu-armUpgrade qemu-ui-spice-coreUpgrade qemu-block-dmgUpgrade qemu-linux-userUpgrade qemu-audio-paUpgrade qemu-skibootUpgrade qemu-block-glusterUpgrade qemu-ui-gtkUpgrade qemu-block-curlUpgrade qemu-audio-ossUpgrade qemu-audio-alsaUpgrade qemu-seabiosUpgrade qemu-imgUpgrade qemu-ipxe | Feb 12, 2026 | Feb 11, 2026 |
| Ubuntu | — | Upgrade qemu-system-modules-spiceUpgrade qemu-systemUpgrade qemu-system-guiUpgrade qemu-system-commonUpgrade qemu-system-miscUpgrade qemu-system-ppcUpgrade qemu-system-x86Upgrade qemu-system-mipsUpgrade qemu-system-dataUpgrade qemu-system-xenUpgrade qemu-system-x86-xenUpgrade qemu-system-armUpgrade qemu-system-modules-openglUpgrade qemu-system-s390xUpgrade qemu-system-riscvUpgrade qemu-system-sparc | Mar 9, 2026 | Mar 4, 2026 |
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