Description
A NULL pointer dereference flaw was found in the floppy disk emulator of QEMU. This issue occurs while processing read/write ioport commands if the selected floppy drive is not initialized with a block device. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | qemu | vulnerable up to (including) qemu 5.2.0 | — |
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 | 1:6.2+dfsg-1 | — |
| Debian 13 | qemu | 1:6.2+dfsg-1 | — |
| Debian 12 | qemu | 1:6.2+dfsg-1 | — |
| Debian 10 | qemu | 1:3.1+dfsg-8+deb10u9 | DLA-3099-1 |
| Debian 9 | qemu | 1:2.8+dfsg-6+deb9u17 | DLA-2970-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | xen | No fix yet | — |
| Ubuntu 26.04 LTS | xen | No fix yet | — |
| Ubuntu 25.10 | xen | No fix yet | — |
| Ubuntu 24.04 LTS | xen | No fix yet | — |
| Ubuntu 22.04 LTS | qemu | 1:6.2+dfsg-2ubuntu5 | — |
| Ubuntu 22.04 LTS | xen | No fix yet | — |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | qemu | 1:4.2-3ubuntu6.21 | USN-5307-1 |
| Ubuntu 20.04 LTS | xen | No fix yet | — |
| Ubuntu 18.04 LTS | qemu | 1:2.11+dfsg-1ubuntu7.39 | USN-5307-1 |
| Ubuntu 18.04 LTS | xen | No fix yet | — |
| Ubuntu 16.04 LTS | xen | No fix yet | — |
| 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 8 | SLOF | 20200717-1.gite18ddad8.module+el8.4.0+8855+a9e237a9 | RHSA-2022:1759, RHSA-2022:0397, RHSA-2022:0325 |
| RHEL 8 | hivex +6 | 1.3.18-21.module+el8.4.0+11609+2eba841a | RHSA-2022:1759, RHSA-2022:0397, RHSA-2022:0325 |
| RHEL 8 | libguestfs-appliance | 1:1.44.0-5.module+el8.6.0+14480+c0a3aa0f | RHSA-2022:1759 |
| RHEL 8 | libguestfs-winsupport | 8.2-2.module+el8.4.0+12717+0b0da9ad | RHSA-2022:1759, RHSA-2022:0397, RHSA-2022:0325 |
| RHEL 8 | libiscsi +2 | 1.18.0-8.module+el8.4.0+8855+a9e237a9 | RHSA-2022:1759, RHSA-2022:0397, RHSA-2022:0325 |
| RHEL 8 | libnbd +6 | 1.6.0-3.module+el8.4.0+9856+bbc47853 | RHSA-2022:1759, RHSA-2022:0397, RHSA-2022:0325 |
| RHEL 8 | libtpms +1 | 0.7.4-4.20201106git2452a24dab.module+el8.4.0+10596+32ba7df3 | RHSA-2022:1759, RHSA-2022:0397, RHSA-2022:0325 |
| RHEL 8 | libvirt +29 | 7.0.0-14.6.module+el8.4.0+13801+378af433 | RHSA-2022:1759, RHSA-2022:0397, RHSA-2022:0325 |
| RHEL 8 | libvirt-dbus | 1.3.0-2.module+el8.4.0+8855+a9e237a9 | RHSA-2022:1759, RHSA-2022:0397, RHSA-2022:0325 |
| RHEL 8 | nbdkit +18 | 1.24.0-1.module+el8.4.0+9341+96cf2672 | RHSA-2022:1759, RHSA-2022:0397, RHSA-2022:0325 |
| RHEL 8 | netcf +2 | 0.2.8-12.module+el8.4.0+8855+a9e237a9 | RHSA-2022:1759, RHSA-2022:0397, RHSA-2022:0325 |
| RHEL 8 | perl-Sys-Virt +2 | 7.0.0-1.module+el8.4.0+9469+2eaf72bc | RHSA-2022:1759, RHSA-2022:0397, RHSA-2022:0325 |
| RHEL 8 | python-pyvmomi +1 | 6.7.1-7.module+el8.4.0+8855+a9e237a9 | RHSA-2022:0397, RHSA-2022:0325 |
| RHEL 8 | qemu-img +14 | 15:5.2.0-16.module+el8.4.0+13742+d494501f.14 | RHSA-2022:1759, RHSA-2022:0397, RHSA-2022:0325 |
| RHEL 8 | qemu-kvm-hw-usbredir | 15:6.0.0-33.module+el8.5.0+13740+349232b6.2 | RHSA-2022:1759, RHSA-2022:0397 |
| RHEL 8 | seabios +2 | 1.14.0-1.module+el8.4.0+8855+a9e237a9 | RHSA-2022:1759, RHSA-2022:0397, RHSA-2022:0325 |
| RHEL 8 | sgabios +1 | 1:0.20170427git-3.module+el8.4.0+8855+a9e237a9 | RHSA-2022:1759, RHSA-2022:0397, RHSA-2022:0325 |
| RHEL 8 | supermin +1 | 5.2.1-1.module+el8.4.0+9751+d56db353 | RHSA-2022:1759, RHSA-2022:0397, RHSA-2022:0325 |
| RHEL 8 | swtpm +3 | 0.4.2-1.20201201git2df14e3.module+el8.4.0+9341+96cf2672 | RHSA-2022:1759, RHSA-2022:0397, RHSA-2022:0325 |
| RHEL 8 | swtpm-tools-pkcs11 | 0.6.0-2.20210607gitea627b3.module+el8.5.0+12696+4ce1c6bc | RHSA-2022:1759, RHSA-2022:0397 |
| RHEL 8 | virt-dib +23 | 1:1.44.0-2.module+el8.4.0+10146+75917d2f | RHSA-2022:1759, RHSA-2022:0397, RHSA-2022:0325 |
| RHEL 8 | virt-v2v +3 | 1:1.42.0-9.module+el8.4.0+9561+069bb9c1 | RHSA-2022:1759, RHSA-2022:0397, RHSA-2022:0325 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | SLOF | 20210217-1.module_el8.6.0+2880+7d9e3703 | ALSA-2022:1759 |
| AlmaLinux 8 | hivex +6 | 1.3.18-23.module_el8.6.0+2880+7d9e3703 | ALSA-2022:1759 |
| AlmaLinux 8 | libguestfs-winsupport | 8.6-1.module_el8.6.0+2880+7d9e3703 | ALSA-2022:1759 |
| AlmaLinux 8 | libiscsi +2 | 1.18.0-8.module_el8.6.0+2880+7d9e3703 | ALSA-2022:1759 |
| AlmaLinux 8 | libnbd +6 | 1.6.0-5.module_el8.6.0+2880+7d9e3703 | ALSA-2022:1759 |
| AlmaLinux 8 | libtpms +1 | 0.9.1-0.20211126git1ff6fe1f43.module_el8.6.0+2880+7d9e3703 | ALSA-2022:1759 |
| AlmaLinux 8 | libvirt +27 | 8.0.0-5.module_el8.6.0+2880+7d9e3703 | ALSA-2022:1759 |
| AlmaLinux 8 | libvirt-dbus | 1.3.0-2.module_el8.6.0+2880+7d9e3703 | ALSA-2022:1759 |
| AlmaLinux 8 | nbdkit +18 | 1.24.0-4.module_el8.6.0+2880+7d9e3703 | ALSA-2022:1759 |
| AlmaLinux 8 | netcf +2 | 0.2.8-12.module_el8.6.0+2880+7d9e3703 | ALSA-2022:1759 |
| AlmaLinux 8 | perl-Sys-Virt +1 | 8.0.0-1.module_el8.6.0+2880+7d9e3703 | ALSA-2022:1759 |
| AlmaLinux 8 | qemu-img +14 | 15:6.2.0-11.module_el8.6.0+2880+7d9e3703 | ALSA-2022:1759 |
| AlmaLinux 8 | seabios +2 | 1.15.0-2.module_el8.6.0+2880+7d9e3703 | ALSA-2022:1759 |
| AlmaLinux 8 | sgabios +1 | 1:0.20170427git-3.module_el8.6.0+2880+7d9e3703 | ALSA-2022:1759 |
| AlmaLinux 8 | supermin +1 | 5.2.1-1.module_el8.6.0+2880+7d9e3703 | ALSA-2022:1759 |
| AlmaLinux 8 | swtpm +4 | 0.7.0-1.20211109gitb79fd91.module_el8.6.0+2880+7d9e3703 | ALSA-2022:1759 |
| AlmaLinux 8 | virt-dib +24 | 1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma | ALSA-2022:1759 |
| AlmaLinux 8 | virt-v2v +3 | 1:1.42.0-18.module_el8.6.0+2880+7d9e3703 | ALSA-2022:1759 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | hivex | 1.3.18-23.module+el8.6.0+847+b490afdd | RLSA-2022:1759 |
| Rocky Linux 8 | libguestfs | 1:1.44.0-5.module+el8.6.0+1052+ff61d164.rocky | RLSA-2022:1759 |
| Rocky Linux 8 | libguestfs-winsupport | 8.6-1.module+el8.6.0+847+b490afdd | RLSA-2022:1759 |
| Rocky Linux 8 | libiscsi | 1.18.0-8.module+el8.4.0+534+4680a14e | RLSA-2022:1759 |
| Rocky Linux 8 | libnbd | 1.6.0-5.module+el8.6.0+847+b490afdd | RLSA-2022:1759 |
| Rocky Linux 8 | libtpms | 0.9.1-0.20211126git1ff6fe1f43.module+el8.6.0+1052+ff61d164 | RLSA-2022:1759 |
| Rocky Linux 8 | libvirt | 8.0.0-5.module+el8.6.0+847+b490afdd | RLSA-2022:1759 |
| Rocky Linux 8 | libvirt-dbus | 1.3.0-2.module+el8.4.0+534+4680a14e | RLSA-2022:1759 |
| Rocky Linux 8 | nbdkit | 1.24.0-4.module+el8.6.0+847+b490afdd | RLSA-2022:1759 |
| Rocky Linux 8 | netcf | 0.2.8-12.module+el8.4.0+534+4680a14e | RLSA-2022:1759 |
| Rocky Linux 8 | perl-Sys-Virt +1 | 8.0.0-1.module+el8.6.0+847+b490afdd | RLSA-2022:1759 |
| Rocky Linux 8 | qemu-kvm | 5:6.2.0-11.module+el8.6.0+1000+18e3b59f.5 | RLSA-2022:1759 |
| Rocky Linux 8 | seabios | 1.15.0-2.module+el8.6.0+1052+ff61d164 | RLSA-2022:1759 |
| Rocky Linux 8 | sgabios | 1:0.20170427git-3.module+el8.4.0+534+4680a14e | RLSA-2022:1759 |
| Rocky Linux 8 | supermin | 5.2.1-1.module+el8.6.0+1052+ff61d164 | RLSA-2022:1759 |
| Rocky Linux 8 | swtpm | 0.7.0-1.20211109gitb79fd91.module+el8.6.0+847+b490afdd | RLSA-2022:1759 |
| Rocky Linux 8 | virt-v2v | 1:1.42.0-18.module+el8.6.0+847+b490afdd | RLSA-2022:1759 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | qemu | 5.2.0-150300.109.2 | SUSE-SU-2022:0177-1 |
| SLES 12 SP5 | qemu | 3.1.1.1-63.4 | SUSE-SU-2022:1151-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP5 | qemu | 3.1.1.1-63.4 | SUSE-SU-2022:1151-1 |
| SLE Real Time 15 SP2 | qemu | 4.2.1-11.34.2 | SUSE-SU-2022:0210-2 |
| SLE Micro 5.1 | qemu | 5.2.0-150300.109.2 | SUSE-SU-2022:0177-1 |
| SLE Micro 5.0 | qemu | 4.2.1-11.34.2 | SUSE-SU-2022:0210-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.3 | qemu | 4.2.1-11.34.2 | openSUSE-SU-2022:0210-1, openSUSE-SU-2022:0177-1 |
| openSUSE Leap 15.3 | qemu-linux-user | 5.2.0-150300.109.2 | openSUSE-SU-2022:0177-1 |
| openSUSE Leap 15.3 | qemu-testsuite | 5.2.0-150300.109.4 | openSUSE-SU-2022:0177-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.15 | qemu | 6.1.1-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | qemu +26 | 10:3.1.0-8.amzn2.0.10 | ALAS2-2023-2061 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | hivex +4 | 1.3.18-21.module+el8.5.0+20482+a450964e | ELSA-2022-9172, ELSA-2022-1759 |
| Oracle Linux 8 | libguestfs-winsupport | 8.2-1.module+el8.5.0+20482+a450964e | ELSA-2022-9172, ELSA-2022-1759 |
| Oracle Linux 8 | libiscsi +2 | 1.18.0-8.module+el8.5.0+20482+a450964e | ELSA-2022-9172, ELSA-2022-1759 |
| Oracle Linux 8 | libnbd +3 | 1.2.2-1.module+el8.5.0+20482+a450964e | ELSA-2022-9172, ELSA-2022-1759 |
| Oracle Linux 8 | libtpms +1 | 0.9.1-0.20211126git1ff6fe1f43.module+el8.6.0+20659+3dcf7c70 | ELSA-2022-1759 |
| Oracle Linux 8 | libvirt +29 | 5.7.0-32.module+el8.5.0+20482+a450964e | ELSA-2022-9172, ELSA-2022-1759 |
| Oracle Linux 8 | libvirt-dbus | 1.3.0-2.module+el8.5.0+20482+a450964e | ELSA-2022-9172, ELSA-2022-1759 |
| Oracle Linux 8 | libvirt-wireshark | 8.0.0-5.0.1.module+el8.6.0+20659+3dcf7c70 | ELSA-2022-1759 |
| Oracle Linux 8 | nbdkit +13 | 1.16.2-4.0.1.module+el8.5.0+20482+a450964e | ELSA-2022-9172, ELSA-2022-1759 |
| Oracle Linux 8 | nbdkit-nbd-plugin +4 | 1.24.0-4.module+el8.6.0+20659+3dcf7c70 | ELSA-2022-1759 |
| Oracle Linux 8 | netcf +2 | 0.2.8-12.module+el8.5.0+20482+a450964e | ELSA-2022-9172, ELSA-2022-1759 |
| Oracle Linux 8 | ocaml-hivex +1 | 1.3.18-23.module+el8.6.0+20659+3dcf7c70 | ELSA-2022-1759 |
| Oracle Linux 8 | ocaml-libguestfs +2 | 1:1.44.0-5.0.1.module+el8.6.0+20659+3dcf7c70 | ELSA-2022-1759 |
| Oracle Linux 8 | ocaml-libnbd +2 | 1.6.0-5.module+el8.6.0+20664+3dcf7c70 | ELSA-2022-1759 |
| Oracle Linux 8 | perl-Sys-Virt | 4.5.0-5.module+el8.5.0+20482+a450964e | ELSA-2022-9172, ELSA-2022-1759 |
| Oracle Linux 8 | qemu-img +9 | 15:4.2.1-15.module+el8.5.0+20482+a450964e | ELSA-2022-9172, ELSA-2022-1759 |
| Oracle Linux 8 | qemu-kvm-docs +4 | 15:6.2.0-11.module+el8.6.0+20659+3dcf7c70 | ELSA-2022-1759 |
| Oracle Linux 8 | seabios +2 | 1.13.0-2.module+el8.5.0+20482+a450964e | ELSA-2022-9172, ELSA-2022-1759 |
| Oracle Linux 8 | sgabios +1 | 1:0.20170427git-3.module+el8.5.0+20482+a450964e | ELSA-2022-9172, ELSA-2022-1759 |
| Oracle Linux 8 | supermin +1 | 5.1.19-10.module+el8.5.0+20482+a450964e | ELSA-2022-9172, ELSA-2022-1759 |
| Oracle Linux 8 | swtpm +4 | 0.7.0-1.20211109gitb79fd91.module+el8.6.0+20659+3dcf7c70 | ELSA-2022-1759 |
| Oracle Linux 8 | virt-dib +23 | 1:1.40.2-28.0.1.module+el8.5.0+20482+a450964e | ELSA-2022-9172, ELSA-2022-1759 |
| Oracle Linux 8 | virt-v2v-man-pages-ja +2 | 1:1.42.0-18.0.1.module+el8.6.0+20659+3dcf7c70 | ELSA-2022-1759 |
| Oracle Linux 7 | qemu +12 | 15:4.2.1-15.el7 | ELSA-2022-9123 |
Advisories 19
- ALSA-2022:1759 Moderate: virt:rhel and virt-devel:rhel security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 31, 2026
- RHSA-2022:1759 Red Hat Security Advisory: virt:rhel and virt-devel:rhel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jul 5, 2026
- WID-SEC-2022-1276 QEMU: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Jun 29, 2026
- RHSA-2022:0397 Red Hat Security Advisory: virt:av and virt-devel:av security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2022:0325 Red Hat Security Advisory: virt:av and virt-devel:av security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- USN-5307-1 qemu vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DLA-3099-1 qemu - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2970-1 qemu - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2022:1759 Moderate: virt:rhel and virt-devel:rhel security, bug fix, and enhancement update Rocky Linux Security Advisories · Feb 4, 2026
- SUSE-SU-2022:0177-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:0210-2 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2022:0177-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:1151-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2022:0210-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:0210-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- ALAS2-2023-2061 Moderate: qemu security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jun 1, 2023
- ELSA-2022-1759 Moderate: virt:ol and virt-devel:ol security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 17, 2022
- ELSA-2022-9172 Important: virt:kvm_utils security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Feb 25, 2022
- ELSA-2022-9123 Important: qemu security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Feb 5, 2022
References
- https://bugs.launchpad.net/qemu/+bug/1912780
- https://www.openwall.com/lists/oss-security/2021/01/28/1
- https://security.netapp.com/advisory/ntap-20210708-0004/
- [debian-lts-announce] 20220404 [SECURITY] [DLA 2970-1] qemu security update mailing-list
- [debian-lts-announce] 20220905 [SECURITY] [DLA 3099-1] qemu security update mailing-list