CVE-2026-48914
Fixed in a distro release EPSS <1%CVSS 6.7
A flaw was found in QEMU's virtio-blk device. The issue arises because the device does not properly validate the size of input descriptors before writing data. A malicious guest with high privileges could exploit this vulnerability by submitting a malformed virtio-blk SCSI request, leading to an out-of-bounds write in the host heap memory and a potential denial of service (DoS) for the QEMU process.
Products: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux for NVIDIA 26, Red Hat OpenShift Container Platform 4
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux 10 | qemu-guest-agent | 18:10.1.0-16.el10_2.5.alma.1 |
| AlmaLinux 10 | qemu-img | 18:10.1.0-16.el10_2.5.alma.1 |
| AlmaLinux 10 | qemu-kvm | 18:10.1.0-16.el10_2.5.alma.1 |
| AlmaLinux 10 | qemu-kvm-audio-pa | 18:10.1.0-16.el10_2.5.alma.1 |
| AlmaLinux 10 | qemu-kvm-block-blkio | 18:10.1.0-16.el10_2.5.alma.1 |
| AlmaLinux 10 | qemu-kvm-block-curl | 18:10.1.0-16.el10_2.5.alma.1 |
| AlmaLinux 10 | qemu-kvm-block-rbd | 18:10.1.0-16.el10_2.5.alma.1 |
| AlmaLinux 10 | qemu-kvm-common | 18:10.1.0-16.el10_2.5.alma.1 |
| AlmaLinux 10 | qemu-kvm-core | 18:10.1.0-16.el10_2.5.alma.1 |
| AlmaLinux 10 | qemu-kvm-device-display-virtio-gpu | 18:10.1.0-16.el10_2.5.alma.1 |
| AlmaLinux 10 | qemu-kvm-device-display-virtio-gpu-ccw | 18:10.1.0-16.el10_2.5.alma.1 |
| AlmaLinux 10 | qemu-kvm-device-display-virtio-gpu-pci | 18:10.1.0-16.el10_2.5.alma.1 |
| AlmaLinux 10 | qemu-kvm-device-display-virtio-vga | 18:10.1.0-16.el10_2.5.alma.1 |
| AlmaLinux 10 | qemu-kvm-device-usb-host | 18:10.1.0-16.el10_2.5.alma.1 |
| AlmaLinux 10 | qemu-kvm-device-usb-redirect | 18:10.1.0-16.el10_2.5.alma.1 |
| AlmaLinux 10 | qemu-kvm-docs | 18:10.1.0-16.el10_2.5.alma.1 |
| AlmaLinux 10 | qemu-kvm-tools | 18:10.1.0-16.el10_2.5.alma.1 |
| AlmaLinux 10 | qemu-kvm-ui-egl-headless | 18:10.1.0-16.el10_2.5.alma.1 |
| AlmaLinux 10 | qemu-kvm-ui-opengl | 18:10.1.0-16.el10_2.5.alma.1 |
| AlmaLinux 10 | qemu-pr-helper | 18:10.1.0-16.el10_2.5.alma.1 |
| AlmaLinux 9 | qemu-guest-agent | 17:10.1.0-17.el9_8.4.alma.1 |
| AlmaLinux 9 | qemu-img | 17:10.1.0-17.el9_8.4.alma.1 |
| AlmaLinux 9 | qemu-kvm | 17:10.1.0-17.el9_8.4.alma.1 |
| AlmaLinux 9 | qemu-kvm-audio-pa | 17:10.1.0-17.el9_8.4.alma.1 |
| AlmaLinux 9 | qemu-kvm-block-blkio | 17:10.1.0-17.el9_8.4.alma.1 |
| AlmaLinux 9 | qemu-kvm-block-curl | 17:10.1.0-17.el9_8.4.alma.1 |
| AlmaLinux 9 | qemu-kvm-block-rbd | 17:10.1.0-17.el9_8.4.alma.1 |
| AlmaLinux 9 | qemu-kvm-common | 17:10.1.0-17.el9_8.4.alma.1 |
| AlmaLinux 9 | qemu-kvm-core | 17:10.1.0-17.el9_8.4.alma.1 |
| AlmaLinux 9 | qemu-kvm-device-display-virtio-gpu | 17:10.1.0-17.el9_8.4.alma.1 |
| AlmaLinux 9 | qemu-kvm-device-display-virtio-gpu-ccw | 17:10.1.0-17.el9_8.4.alma.1 |
| AlmaLinux 9 | qemu-kvm-device-display-virtio-gpu-pci | 17:10.1.0-17.el9_8.4.alma.1 |
| AlmaLinux 9 | qemu-kvm-device-display-virtio-vga | 17:10.1.0-17.el9_8.4.alma.1 |
| AlmaLinux 9 | qemu-kvm-device-usb-host | 17:10.1.0-17.el9_8.4.alma.1 |
| AlmaLinux 9 | qemu-kvm-device-usb-redirect | 17:10.1.0-17.el9_8.4.alma.1 |
| AlmaLinux 9 | qemu-kvm-docs | 17:10.1.0-17.el9_8.4.alma.1 |
| AlmaLinux 9 | qemu-kvm-tools | 17:10.1.0-17.el9_8.4.alma.1 |
| AlmaLinux 9 | qemu-kvm-ui-egl-headless | 17:10.1.0-17.el9_8.4.alma.1 |
| AlmaLinux 9 | qemu-kvm-ui-opengl | 17:10.1.0-17.el9_8.4.alma.1 |
| AlmaLinux 9 | qemu-pr-helper | 17:10.1.0-17.el9_8.4.alma.1 |
| Amazon Linux 2 | ivshmem-tools | 10:3.1.0-8.amzn2.0.25 |
| Amazon Linux 2 | qemu | 10:3.1.0-8.amzn2.0.25 |
| Amazon Linux 2 | qemu-audio-alsa | 10:3.1.0-8.amzn2.0.25 |
| Amazon Linux 2 | qemu-audio-oss | 10:3.1.0-8.amzn2.0.25 |
| Amazon Linux 2 | qemu-audio-pa | 10:3.1.0-8.amzn2.0.25 |
| Amazon Linux 2 | qemu-audio-sdl | 10:3.1.0-8.amzn2.0.25 |
| Amazon Linux 2 | qemu-block-curl | 10:3.1.0-8.amzn2.0.25 |
| Amazon Linux 2 | qemu-block-dmg | 10:3.1.0-8.amzn2.0.25 |
| Amazon Linux 2 | qemu-block-iscsi | 10:3.1.0-8.amzn2.0.25 |
| Amazon Linux 2 | qemu-block-nfs | 10:3.1.0-8.amzn2.0.25 |
| Amazon Linux 2 | qemu-block-rbd | 10:3.1.0-8.amzn2.0.25 |
| Amazon Linux 2 | qemu-block-ssh | 10:3.1.0-8.amzn2.0.25 |
| Amazon Linux 2 | qemu-common | 10:3.1.0-8.amzn2.0.25 |
| Amazon Linux 2 | qemu-guest-agent | 10:3.1.0-8.amzn2.0.25 |
| Amazon Linux 2 | qemu-img | 10:3.1.0-8.amzn2.0.25 |
| Amazon Linux 2 | qemu-kvm | 10:3.1.0-8.amzn2.0.25 |
| Amazon Linux 2 | qemu-kvm-core | 10:3.1.0-8.amzn2.0.25 |
| Amazon Linux 2 | qemu-system-aarch64 | 10:3.1.0-8.amzn2.0.25 |
| Amazon Linux 2 | qemu-system-aarch64-core | 10:3.1.0-8.amzn2.0.25 |
| Amazon Linux 2 | qemu-system-x86 | 10:3.1.0-8.amzn2.0.25 |
| Amazon Linux 2 | qemu-system-x86-core | 10:3.1.0-8.amzn2.0.25 |
| Amazon Linux 2 | qemu-ui-curses | 10:3.1.0-8.amzn2.0.25 |
| Amazon Linux 2 | qemu-ui-gtk | 10:3.1.0-8.amzn2.0.25 |
| Amazon Linux 2 | qemu-ui-sdl | 10:3.1.0-8.amzn2.0.25 |
| Amazon Linux 2 | qemu-user | 10:3.1.0-8.amzn2.0.25 |
| Amazon Linux 2 | qemu-user-binfmt | 10:3.1.0-8.amzn2.0.25 |
| Amazon Linux 2 | qemu-user-static | 10:3.1.0-8.amzn2.0.25 |
| Debian 12 | qemu | no fix |
| Debian 13 | qemu | 1:10.0.11+ds-0+deb13u1 |
| Debian 14 | qemu | 1:11.0.2+ds-1 |
| Red Hat Enterprise Linux 10.2 | qemu-guest-agent | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-guest-agent-debuginfo | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-img | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-img-debuginfo | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-audio-dbus-debuginfo | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-audio-pa | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-audio-pa-debuginfo | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-block-blkio | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-block-blkio-debuginfo | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-block-curl | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-block-curl-debuginfo | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-block-rbd | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-block-rbd-debuginfo | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-common | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-common-debuginfo | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-core | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-core-debuginfo | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-debugsource | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-device-display-virtio-gpu | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-device-display-virtio-gpu-ccw | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-device-display-virtio-gpu-ccw-debuginfo | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-device-display-virtio-gpu-debuginfo | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-device-display-virtio-gpu-pci | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-device-display-virtio-gpu-pci-debuginfo | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-device-display-virtio-vga | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-device-display-virtio-vga-debuginfo | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-device-usb-host | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-device-usb-host-debuginfo | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-device-usb-redirect | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-device-usb-redirect-debuginfo | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-docs | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-tests-debuginfo | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-tools | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-tools-debuginfo | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-ui-dbus-debuginfo | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-ui-egl-headless | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-ui-egl-headless-debuginfo | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-ui-opengl | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-kvm-ui-opengl-debuginfo | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-pr-helper | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 10.2 | qemu-pr-helper-debuginfo | 18:10.1.0-16.el10_2.5 |
| Red Hat Enterprise Linux 9 | qemu-guest-agent | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-guest-agent-debuginfo | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-img | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-img-debuginfo | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-audio-dbus-debuginfo | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-audio-pa | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-audio-pa-debuginfo | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-block-blkio | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-block-blkio-debuginfo | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-block-curl | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-block-curl-debuginfo | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-block-rbd | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-block-rbd-debuginfo | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-common | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-common-debuginfo | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-core | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-core-debuginfo | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-debuginfo | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-debugsource | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-device-display-virtio-gpu | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-device-display-virtio-gpu-ccw | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-device-display-virtio-gpu-ccw-debuginfo | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-device-display-virtio-gpu-debuginfo | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-device-display-virtio-gpu-pci | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-device-display-virtio-gpu-pci-debuginfo | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-device-display-virtio-vga | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-device-display-virtio-vga-debuginfo | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-device-usb-host | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-device-usb-host-debuginfo | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-device-usb-redirect | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-device-usb-redirect-debuginfo | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-docs | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-tests-debuginfo | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-tools | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-tools-debuginfo | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-ui-dbus-debuginfo | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-ui-egl-headless | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-ui-egl-headless-debuginfo | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-ui-opengl | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-kvm-ui-opengl-debuginfo | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-pr-helper | 17:10.1.0-17.el9_8.4 |
| Red Hat Enterprise Linux 9 | qemu-pr-helper-debuginfo | 17:10.1.0-17.el9_8.4 |
| Rocky Linux 10 | qemu-kvm | 8:10.1.0-16.el10_2.5 |
| Rocky Linux 9 | qemu-kvm | 7:10.1.0-17.el9_8.4 |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | qemu | 9.2.4-150700.3.23.1 |
| SUSE Linux Enterprise Module for Package Hub 15 SP7 | qemu | 9.2.4-150700.3.23.1 |
| SUSE Linux Enterprise Module for Package Hub 15 SP7 | qemu-linux-user | 9.2.4-150700.3.23.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP7 | qemu | 9.2.4-150700.3.23.1 |
| SUSE Linux Enterprise Server 16.0 | qemu | 10.0.11-160000.1.1 |
| SUSE Linux Enterprise Server 16.0 | qemu-linux-user | 10.0.11-160000.1.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | qemu | 10.0.11-160000.1.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | qemu-linux-user | 10.0.11-160000.1.1 |
| SUSE Linux Micro 6.2 | qemu | 10.0.11-160000.1.1 |
| Ubuntu 22.04 LTS | qemu | no fix |
| Ubuntu 24.04 LTS | qemu | no fix |
| Ubuntu 25.10 | qemu | no fix |
| Ubuntu 26.04 LTS | qemu | no fix |
| Ubuntu 26.04 LTS | qemu-hwe | no fix |
| Ubuntu 26.10 | qemu | no fix |
| Ubuntu 26.10 | qemu-hwe | no fix |
| Ubuntu Pro 14.04 LTS | qemu | no fix |
| Ubuntu Pro 16.04 LTS | qemu | no fix |
| Ubuntu Pro 18.04 LTS | qemu | no fix |
| Ubuntu Pro 20.04 LTS | qemu | no fix |
| openSUSE Leap 16.0 | qemu | 10.0.11-160000.1.1 |
| openSUSE Leap 16.0 | qemu-linux-user | 10.0.11-160000.1.1 |
| openSUSE Tumbleweed | qemu | 11.0.2-1.1 |