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An assertion failure issue was found in the Network Block Device(NBD) Server in all QEMU versions before QEMU 5.0.1. This flaw occurs when an nbd-client sends a spec-compliant request that is near the boundary of maximum permitted request length. A remote nbd-client could use this flaw to crash the qemu-nbd server resulting in a denial of service.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade qemu | Jul 30, 2024 | Jun 9, 2020 |
| Gentoo Linux | — | Upgrade app-emulation/qemu. | Nov 12, 2020 | Jun 9, 2020 |
| Huawei Euleros 2_0_sp8 | — | Upgrade qemu-img | Nov 3, 2020 | Jun 9, 2020 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Jun 9, 2020 |
| Suse | — | Upgrade qemu-vhost-user-gpuUpgrade qemu-guest-agentUpgrade qemu-audio-alsaUpgrade qemu-vgabiosUpgrade qemu-block-sshUpgrade qemu-extraUpgrade qemu-chardev-baumUpgrade qemu-langUpgrade qemu-block-curlUpgrade qemu-sgabiosUpgrade qemu-microvmUpgrade qemu-s390Upgrade qemu-s390xUpgrade qemu-block-rbdUpgrade qemu-audio-spiceUpgrade qemu-kvmUpgrade qemu-chardev-spiceUpgrade qemu-testsuiteUpgrade qemu-ui-gtkUpgrade qemu-ksmUpgrade qemu-hw-s390x-virtio-gpu-ccwUpgrade qemu-audio-sdlUpgrade qemu-ipxeUpgrade qemu-ui-sdlUpgrade qemu-hw-display-virtio-gpu-pciUpgrade qemu-hw-display-qxlUpgrade qemu-ui-openglUpgrade qemu-linux-userUpgrade qemu-x86Upgrade qemu-toolsUpgrade qemu-armUpgrade qemu-ui-cursesUpgrade qemu-hw-display-virtio-gpuUpgrade qemu-ui-spice-appUpgrade qemu-ui-spice-coreUpgrade qemu-skibootUpgrade qemu-block-nfsUpgrade qemu-audio-paUpgrade qemu-seabiosUpgrade qemu-hw-usb-redirectUpgrade qemu-block-iscsiUpgrade qemuUpgrade qemu-block-glusterUpgrade qemu-block-dmgUpgrade qemu-ppcUpgrade qemu-hw-display-virtio-vga | Jul 29, 2020 | Jun 9, 2020 |
| Ubuntu | — | Upgrade qemu-systemUpgrade qemu-system-x86Upgrade qemu-system-sparcUpgrade qemu-system-armUpgrade qemuUpgrade qemu-system-ppcUpgrade qemu-system-x86-microvmUpgrade qemu-system-s390xUpgrade qemu-system-x86-xenUpgrade qemu-system-mips | Aug 20, 2020 | Jun 9, 2020 |
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