Description
A heap buffer overflow was found in the floppy disk emulator of QEMU up to 6.0.0 (including). It could occur in fdctrl_transfer_handler() in hw/block/fdc.c while processing DMA read data transfers from the floppy drive to the guest system. A privileged guest user could use this flaw to crash the QEMU process on the host resulting in DoS scenario, or potential information leakage from the host memory.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | QEMU | up to 6.0.0 (including) | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | qemu | 1:7.1+dfsg-1 | — |
| Debian 13 | qemu | 1:7.1+dfsg-1 | — |
| Debian 12 | qemu | 1:7.1+dfsg-1 | — |
| Debian 10 | qemu | 1:3.1+dfsg-8+deb10u9 | DLA-3099-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | qemu | 1:6.2+dfsg-2ubuntu6.2 | USN-5489-1 |
| Ubuntu 20.04 LTS | qemu | 1:4.2-3ubuntu6.23 | USN-5489-1 |
| Ubuntu 18.04 LTS | qemu | 1:2.11+dfsg-1ubuntu7.40 | USN-5489-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | qemu | 1:2.5+dfsg-5ubuntu10.51+esm4 | — |
| Ubuntu Pro 14.04 LTS | qemu | 2.0.0+dfsg-2ubuntu1.47+esm6 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | qemu-img +21 | 17:7.0.0-13.el9 | RHSA-2022:7967 |
| RHEL 8 | SLOF | 20210217-1.module+el8.7.0+16689+53d59bc2 | RHSA-2022:7472 |
| RHEL 8 | hivex +6 | 1.3.18-23.module+el8.7.0+16689+53d59bc2 | RHSA-2022:7472 |
| RHEL 8 | libguestfs-winsupport | 8.6-1.module+el8.7.0+16689+53d59bc2 | RHSA-2022:7472 |
| RHEL 8 | libiscsi +2 | 1.18.0-8.module+el8.7.0+16689+53d59bc2 | RHSA-2022:7472 |
| RHEL 8 | libnbd +6 | 1.6.0-5.module+el8.7.0+16689+53d59bc2 | RHSA-2022:7472 |
| RHEL 8 | libtpms +1 | 0.9.1-1.20211126git1ff6fe1f43.module+el8.7.0+16689+53d59bc2 | RHSA-2022:7472 |
| RHEL 8 | libvirt +27 | 8.0.0-10.module+el8.7.0+16689+53d59bc2 | RHSA-2022:7472 |
| RHEL 8 | libvirt-dbus | 1.3.0-2.module+el8.7.0+16689+53d59bc2 | RHSA-2022:7472 |
| RHEL 8 | libvirt-python +1 | 8.0.0-2.module+el8.7.0+16689+53d59bc2 | RHSA-2022:7472 |
| RHEL 8 | nbdkit +18 | 1.24.0-4.module+el8.7.0+16689+53d59bc2 | RHSA-2022:7472 |
| RHEL 8 | netcf +2 | 0.2.8-12.module+el8.7.0+16689+53d59bc2 | RHSA-2022:7472 |
| RHEL 8 | perl-Sys-Virt | 8.0.0-1.module+el8.7.0+16689+53d59bc2 | RHSA-2022:7472 |
| RHEL 8 | qemu-img +14 | 15:6.2.0-20.module+el8.7.0+16689+53d59bc2.1 | RHSA-2022:7472 |
| RHEL 8 | seabios +2 | 1.16.0-3.module+el8.7.0+16689+53d59bc2 | RHSA-2022:7472 |
| RHEL 8 | sgabios +1 | 1:0.20170427git-3.module+el8.7.0+16689+53d59bc2 | RHSA-2022:7472 |
| RHEL 8 | supermin +1 | 5.2.1-2.module+el8.7.0+16689+53d59bc2 | RHSA-2022:7472 |
| RHEL 8 | swtpm +4 | 0.7.0-4.20211109gitb79fd91.module+el8.7.0+16689+53d59bc2 | RHSA-2022:7472 |
| RHEL 8 | virt-dib +24 | 1:1.44.0-9.module+el8.7.0+16689+53d59bc2 | RHSA-2022:7472 |
| RHEL 8 | virt-v2v +3 | 1:1.42.0-21.module+el8.7.0+16689+53d59bc2 | RHSA-2022:7472 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | qemu-img +21 | 17:7.0.0-13.el9 | ALSA-2022:7967 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | qemu-kvm | 7:7.0.0-13.el9 | RLSA-2022:7967 |
| Rocky Linux 8 | hivex | 1.3.18-23.module+el8.6.0+847+b490afdd | RLSA-2022:7472 |
| Rocky Linux 8 | libguestfs | 1:1.44.0-9.module+el8.7.0+1084+97b81f61.rocky | RLSA-2022:7472 |
| Rocky Linux 8 | libguestfs-winsupport | 8.6-1.module+el8.6.0+847+b490afdd | RLSA-2022:7472 |
| Rocky Linux 8 | libiscsi | 1.18.0-8.module+el8.4.0+534+4680a14e | RLSA-2022:7472 |
| Rocky Linux 8 | libnbd | 1.6.0-5.module+el8.6.0+847+b490afdd | RLSA-2022:7472 |
| Rocky Linux 8 | libtpms | 0.9.1-1.20211126git1ff6fe1f43.module+el8.7.0+1084+97b81f61 | RLSA-2022:7472 |
| Rocky Linux 8 | libvirt | 8.0.0-10.module+el8.7.0+1084+97b81f61 | RLSA-2022:7472 |
| Rocky Linux 8 | libvirt-dbus | 1.3.0-2.module+el8.4.0+534+4680a14e | RLSA-2022:7472 |
| Rocky Linux 8 | libvirt-python | 8.0.0-2.module+el8.7.0+1084+97b81f61 | RLSA-2022:7472 |
| Rocky Linux 8 | nbdkit | 1.24.0-4.module+el8.6.0+847+b490afdd | RLSA-2022:7472 |
| Rocky Linux 8 | netcf | 0.2.8-12.module+el8.4.0+534+4680a14e | RLSA-2022:7472 |
| Rocky Linux 8 | perl-Sys-Virt | 8.0.0-1.module+el8.6.0+847+b490afdd | RLSA-2022:7472 |
| Rocky Linux 8 | qemu-kvm | 5:6.2.0-20.module+el8.7.0+1084+97b81f61.2 | RLSA-2022:7472 |
| Rocky Linux 8 | seabios | 1.16.0-3.module+el8.7.0+1084+97b81f61 | RLSA-2022:7472 |
| Rocky Linux 8 | sgabios | 1:0.20170427git-3.module+el8.4.0+534+4680a14e | RLSA-2022:7472 |
| Rocky Linux 8 | supermin | 5.2.1-2.module+el8.7.0+1084+97b81f61 | RLSA-2022:7472 |
| Rocky Linux 8 | swtpm | 0.7.0-4.20211109gitb79fd91.module+el8.7.0+1084+97b81f61 | RLSA-2022:7472 |
| Rocky Linux 8 | virt-v2v | 1:1.42.0-21.module+el8.7.0+1084+97b81f61 | RLSA-2022:7472 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | qemu | 6.2.0-150400.37.14.2 | SUSE-SU-2023:0879-1 |
| SLES 15 SP3 | qemu | 5.2.0-150300.121.2 | SUSE-SU-2023:0840-1 |
| SLES 15 SP2 | qemu | 4.2.1-150200.72.2 | SUSE-SU-2023:0878-1 |
| SLES 15 SP1 | qemu | 3.1.1.1-150100.80.43.2 | SUSE-SU-2022:3768-1 |
| SLES 12 SP5 | qemu | 3.1.1.1-66.1 | SUSE-SU-2023:0761-1 |
Show 17 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP3 | qemu | 5.2.0-150300.121.2 | SUSE-SU-2023:0840-1 |
| SLES for SAP 15 SP2 | qemu | 4.2.1-150200.72.2 | SUSE-SU-2023:0878-1 |
| SLES for SAP 15 SP1 | qemu | 3.1.1.1-150100.80.43.2 | SUSE-SU-2022:3768-1 |
| SLES for SAP 12 SP5 | qemu | 3.1.1.1-66.1 | SUSE-SU-2023:0761-1 |
| SLE Real Time 15 SP3 | qemu | 5.2.0-150300.121.2 | SUSE-SU-2023:0840-1 |
| SLE Micro 5.4 | qemu | 6.2.0-150400.37.14.2 | SUSE-SU-2023:0879-2 |
| SLE Micro 5.3 | qemu | 6.2.0-150400.37.14.2 | SUSE-SU-2023:0879-1 |
| SLE Micro 5.2 | qemu | 5.2.0-150300.121.2 | SUSE-SU-2023:0840-1 |
| SLE Micro 5.1 | qemu | 5.2.0-150300.121.2 | SUSE-SU-2023:0840-1 |
| SLE HPC 15 SP3 | qemu | 5.2.0-150300.121.2 | SUSE-SU-2023:0840-1 |
| SLE HPC 15 SP2 | qemu | 4.2.1-150200.72.2 | SUSE-SU-2023:0878-1 |
| SLE HPC 15 SP1 | qemu | 3.1.1.1-150100.80.43.2 | SUSE-SU-2022:3768-1 |
| SUSE Manager Server 4.2 | qemu | 5.2.0-150300.121.2 | SUSE-SU-2023:0840-1 |
| SUSE Manager Proxy 4.2 | qemu | 5.2.0-150300.121.2 | SUSE-SU-2023:0840-1 |
| SUSE Enterprise Storage 7.1 | qemu | 5.2.0-150300.121.2 | SUSE-SU-2023:0840-1 |
| SUSE Enterprise Storage 7 | qemu | 4.2.1-150200.72.2 | SUSE-SU-2023:0878-1 |
| SUSE Enterprise Storage 6 | qemu | 3.1.1.1-150100.80.43.2 | SUSE-SU-2022:3768-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.4 | qemu | 4.2.1-150200.72.2 | SUSE-SU-2023:0879-1, SUSE-SU-2023:0878-1 |
| openSUSE Leap 15.4 | qemu-testsuite +1 | 6.2.0-150400.37.14.1 | SUSE-SU-2023:0879-1 |
| openSUSE Leap 15.3 | qemu | 3.1.1.1-150100.80.43.2 | SUSE-SU-2022:3768-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.3 | qemu | 6.2.0-150400.37.14.2 | SUSE-SU-2023:0879-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | qemu | 6.1.0-r0 | — |
| Alpine v3.23 | qemu | 6.1.0-r0 | — |
| Alpine v3.22 | qemu | 6.1.0-r0 | — |
| Alpine v3.21 | qemu | 6.1.0-r0 | — |
| Alpine v3.20 | qemu | 6.1.0-r0 | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | qemu | 6.1.0-r0 | — |
| Alpine v3.18 | qemu | 6.1.0-r0 | — |
| Alpine v3.17 | qemu | 6.1.0-r0 | — |
| Alpine v3.16 | qemu | 6.1.0-r0 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | qemu-img +20 | 17:7.0.0-13.el9 | ELSA-2022-7967 |
| Oracle Linux 8 | hivex +4 | 1.3.18-21.module+el8.6.0+20690+93de6acb | ELSA-2022-9700, ELSA-2022-7472 |
| Oracle Linux 8 | libguestfs-winsupport | 8.2-1.module+el8.6.0+20690+93de6acb | ELSA-2022-9700, ELSA-2022-7472 |
| Oracle Linux 8 | libiscsi +2 | 1.18.0-8.module+el8.6.0+20690+93de6acb | ELSA-2022-9700, ELSA-2022-7472 |
| Oracle Linux 8 | libnbd +3 | 1.2.2-1.module+el8.6.0+20690+93de6acb | ELSA-2022-9700, ELSA-2022-7472 |
| Oracle Linux 8 | libtpms +1 | 0.9.1-1.20211126git1ff6fe1f43.module+el8.7.0+20875+5dd40464 | ELSA-2022-7472 |
| Oracle Linux 8 | libvirt +29 | 5.7.0-34.module+el8.6.0+20690+93de6acb | ELSA-2022-9700, ELSA-2022-7472 |
| Oracle Linux 8 | libvirt-dbus | 1.3.0-2.module+el8.6.0+20690+93de6acb | ELSA-2022-9700, ELSA-2022-7472 |
| Oracle Linux 8 | libvirt-wireshark | 8.0.0-10.0.1.module+el8.7.0+20875+5dd40464 | ELSA-2022-7472 |
| Oracle Linux 8 | nbdkit +13 | 1.16.2-4.0.1.module+el8.6.0+20690+93de6acb | ELSA-2022-9700, ELSA-2022-7472 |
| Oracle Linux 8 | nbdkit-nbd-plugin +4 | 1.24.0-4.module+el8.7.0+20875+5dd40464 | ELSA-2022-7472 |
| Oracle Linux 8 | netcf +2 | 0.2.8-12.module+el8.6.0+20690+93de6acb | ELSA-2022-9700, ELSA-2022-7472 |
| Oracle Linux 8 | ocaml-hivex +1 | 1.3.18-23.module+el8.7.0+20875+5dd40464 | ELSA-2022-7472 |
| Oracle Linux 8 | ocaml-libguestfs +2 | 1:1.44.0-9.0.1.module+el8.7.0+20875+5dd40464 | ELSA-2022-7472 |
| Oracle Linux 8 | ocaml-libnbd +2 | 1.6.0-5.module+el8.7.0+20875+5dd40464 | ELSA-2022-7472 |
| Oracle Linux 8 | perl-Sys-Virt | 4.5.0-5.module+el8.6.0+20690+93de6acb | ELSA-2022-9700, ELSA-2022-7472 |
| Oracle Linux 8 | qemu-img +9 | 15:4.2.1-18.module+el8.6.0+20690+93de6acb | ELSA-2022-9700, ELSA-2022-7472 |
| Oracle Linux 8 | qemu-kvm-docs +4 | 15:6.2.0-20.module+el8.7.0+20875+5dd40464.1 | ELSA-2022-7472 |
| Oracle Linux 8 | seabios +2 | 1.13.0-2.module+el8.6.0+20690+93de6acb | ELSA-2022-9700, ELSA-2022-7472 |
| Oracle Linux 8 | sgabios +1 | 1:0.20170427git-3.module+el8.6.0+20690+93de6acb | ELSA-2022-9700, ELSA-2022-7472 |
| Oracle Linux 8 | supermin +1 | 5.1.19-10.module+el8.6.0+20690+93de6acb | ELSA-2022-9700, ELSA-2022-7472 |
| Oracle Linux 8 | swtpm +4 | 0.7.0-4.20211109gitb79fd91.module+el8.7.0+20875+5dd40464 | ELSA-2022-7472 |
| Oracle Linux 8 | virt-dib +23 | 1:1.40.2-28.0.4.module+el8.6.0+20690+93de6acb | ELSA-2022-9700, ELSA-2022-7472 |
| Oracle Linux 8 | virt-v2v-man-pages-ja +2 | 1:1.42.0-21.module+el8.7.0+20875+5dd40464 | ELSA-2022-7472 |
| Oracle Linux 7 | qemu +12 | 15:4.2.1-18.el7 | ELSA-2022-9669 |
Advisories 18
- ALSA-2022:7967 Moderate: qemu-kvm security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2022-0419 QEMU: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Jun 29, 2026
- RHSA-2022:7967 Red Hat Security Advisory: qemu-kvm security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2022:7472 Red Hat Security Advisory: virt:rhel and virt-devel:rhel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- USN-5489-1 qemu vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DLA-3099-1 qemu - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2022:7472 Low: virt:rhel and virt-devel:rhel security, bug fix, and enhancement update Rocky Linux Security Advisories · Feb 5, 2026
- RLSA-2022:7967 Moderate: qemu-kvm security, bug fix, and enhancement update Rocky Linux Security Advisories · Feb 5, 2026
- SUSE-SU-2023:0840-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0761-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0879-2 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0879-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0878-1 Security update for qemu SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2022:3768-1 Security update for qemu SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2022-7967 Moderate: qemu-kvm security, bug fix, and enhancement update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Nov 22, 2022
- ELSA-2022-7472 Low: virt:ol and virt-devel:ol security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Nov 15, 2022
- ELSA-2022-9700 Important: virt:kvm_utils security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Aug 8, 2022
- ELSA-2022-9669 Important: qemu security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 1, 2022