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QEMU (aka Quick Emulator) built with the TPR optimization for 32-bit Windows guests support is vulnerable to a null pointer dereference flaw. It occurs while doing I/O port write operations via hmp interface. In that, 'current_cpu' remains null, which leads to the null pointer dereference. A user or process could use this flaw to crash the QEMU instance, resulting in DoS issue.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade qemuUpgrade qemu-kvm | Feb 9, 2016 | Feb 8, 2016 |
| Gentoo Linux | — | Upgrade app-emulation/qemu. | Oct 30, 2017 | Dec 29, 2016 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Dec 18, 2015 |
| Suse | — | Upgrade xen-tools-xendomains-wait-diskUpgrade qemu-audio-spiceUpgrade xen-develUpgrade qemu-armUpgrade xen-libsUpgrade qemu-chardev-spiceUpgrade qemu-skibootUpgrade qemu-block-rbdUpgrade xen-kmp-defaultUpgrade xen-doc-htmlUpgrade qemu-hw-display-virtio-gpuUpgrade qemu-ui-spice-appUpgrade qemu-audio-ossUpgrade qemu-hw-display-virtio-vgaUpgrade qemuUpgrade qemu-s390xUpgrade qemu-ipxeUpgrade qemu-toolsUpgrade xen-toolsUpgrade qemu-ui-openglUpgrade qemu-ui-cursesUpgrade qemu-sgabiosUpgrade xen-libs-32bitUpgrade qemu-hw-display-qxlUpgrade kvmUpgrade qemu-audio-paUpgrade qemu-ppcUpgrade qemu-vgabiosUpgrade qemu-s390Upgrade qemu-hw-usb-redirectUpgrade qemu-guest-agentUpgrade qemu-ui-spice-coreUpgrade qemu-hw-s390x-virtio-gpu-ccwUpgrade qemu-ui-gtkUpgrade qemu-chardev-baumUpgrade xenUpgrade qemu-microvmUpgrade qemu-x86Upgrade qemu-hw-display-virtio-gpu-pciUpgrade qemu-block-iscsiUpgrade qemu-langUpgrade qemu-kvmUpgrade qemu-ksmUpgrade qemu-audio-alsaUpgrade xen-kmp-paeUpgrade qemu-block-sshUpgrade qemu-block-curlUpgrade qemu-seabiosUpgrade xen-tools-domU | Mar 28, 2016 | Mar 24, 2016 |
| Ubuntu | — | Upgrade qemu-kvmUpgrade qemu-system-miscUpgrade qemu-system-sparcUpgrade qemu-system-x86Upgrade qemu-system-mipsUpgrade qemu-system-armUpgrade qemu-system-ppcUpgrade qemu-system-aarch64Upgrade qemu-system | Feb 3, 2016 | Feb 3, 2016 |
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