The (1) fw_cfg_write and (2) fw_cfg_read functions in hw/nvram/fw_cfg.c in QEMU before 2.4, when built with the Firmware Configuration device emulation support, allow guest OS users with the CAP_SYS_RAWIO privilege to cause a denial of service (out-of-bounds read or write access and process crash) or possibly execute arbitrary code via an invalid current entry value in a firmware configuration.
CVSS Details
- CVSS 3.1 Base Score: 8.1
- CVSS 3.0 Vector: (CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Centos_linux | — | centos-upgrade-libcacardcentos-upgrade-libcacard-develcentos-upgrade-libcacard-toolscentos-upgrade-qemu-guest-agentcentos-upgrade-qemu-imgcentos-upgrade-qemu-kvmcentos-upgrade-qemu-kvm-commoncentos-upgrade-qemu-kvm-tools | Jul 6, 2016 | Feb 1, 2016 |
| Debian | debian-upgrade-qemudebian-upgrade-qemu-kvm | Apr 7, 2016 | Feb 8, 2016 | |
| F5 Big Ip | f5-bigip-upgrade-latest | Jun 17, 2026 | May 10, 2016 | |
| Gentoo Linux | gentoo-linux-upgrade-app-emulation-qemu | Oct 30, 2017 | Apr 7, 2016 | |
| Oracle_linux | — | oracle-linux-upgrade-libcacardoracle-linux-upgrade-libcacard-develoracle-linux-upgrade-libcacard-toolsoracle-linux-upgrade-qemu-guest-agentoracle-linux-upgrade-qemu-imgoracle-linux-upgrade-qemu-kvmoracle-linux-upgrade-qemu-kvm-commonoracle-linux-upgrade-qemu-kvm-tools | May 17, 2016 | Apr 7, 2016 |
| Redhat_linux | — | no-fix-redhat-rpm-package | Jul 9, 2025 | Jan 5, 2016 |
| Suse | — | suse-upgrade-kvmsuse-upgrade-qemususe-upgrade-qemu-armsuse-upgrade-qemu-audio-alsasuse-upgrade-qemu-audio-osssuse-upgrade-qemu-audio-pasuse-upgrade-qemu-audio-spicesuse-upgrade-qemu-block-curlsuse-upgrade-qemu-block-iscsisuse-upgrade-qemu-block-rbdsuse-upgrade-qemu-block-sshsuse-upgrade-qemu-chardev-baumsuse-upgrade-qemu-chardev-spicesuse-upgrade-qemu-guest-agentsuse-upgrade-qemu-hw-display-qxlsuse-upgrade-qemu-hw-display-virtio-gpususe-upgrade-qemu-hw-display-virtio-gpu-pcisuse-upgrade-qemu-hw-display-virtio-vgasuse-upgrade-qemu-hw-s390x-virtio-gpu-ccwsuse-upgrade-qemu-hw-usb-redirectsuse-upgrade-qemu-ipxesuse-upgrade-qemu-ksmsuse-upgrade-qemu-kvmsuse-upgrade-qemu-langsuse-upgrade-qemu-microvmsuse-upgrade-qemu-ppcsuse-upgrade-qemu-s390suse-upgrade-qemu-s390xsuse-upgrade-qemu-seabiossuse-upgrade-qemu-sgabiossuse-upgrade-qemu-skibootsuse-upgrade-qemu-toolssuse-upgrade-qemu-ui-cursessuse-upgrade-qemu-ui-gtksuse-upgrade-qemu-ui-openglsuse-upgrade-qemu-ui-spice-appsuse-upgrade-qemu-ui-spice-coresuse-upgrade-qemu-vgabiossuse-upgrade-qemu-x86suse-upgrade-xensuse-upgrade-xen-develsuse-upgrade-xen-doc-htmlsuse-upgrade-xen-doc-pdfsuse-upgrade-xen-kmp-defaultsuse-upgrade-xen-kmp-paesuse-upgrade-xen-kmp-tracesuse-upgrade-xen-libssuse-upgrade-xen-libs-32bitsuse-upgrade-xen-toolssuse-upgrade-xen-tools-domususe-upgrade-xen-tools-xendomains-wait-disk | Mar 28, 2016 | Mar 24, 2016 |
| Ubuntu | ubuntu-upgrade-qemu-kvmubuntu-upgrade-qemu-systemubuntu-upgrade-qemu-system-aarch64ubuntu-upgrade-qemu-system-armubuntu-upgrade-qemu-system-mipsubuntu-upgrade-qemu-system-miscubuntu-upgrade-qemu-system-ppcubuntu-upgrade-qemu-system-sparcubuntu-upgrade-qemu-system-x86 | Apr 7, 2016 | Feb 3, 2016 |
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