Description
A flaw was found in QEMU. The async nature of hot-unplug enables a race scenario where the net device backend is cleared before the virtio-net pci frontend has been unplugged. A malicious guest could use this time window to trigger an assertion and cause a denial of service.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | qemu | — | 8.1.0-rc0 |
| Red Hat | Red Hat Enterprise Linux 6 | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat Enterprise Linux 8 Advanced Virtualization | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
| Red Hat | Red Hat OpenStack Platform 13 (Queens) | — | — |
| Fedora | Extra Packages for Enterprise Linux | — | — |
| Fedora | Fedora | — | — |
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 | 1:8.0.3+dfsg-1 | — |
| Debian 13 | qemu | 1:8.0.3+dfsg-1 | — |
| Debian 12 | qemu | 1:7.2+dfsg-7+deb12u1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | qemu | 1:6.2+dfsg-2ubuntu6.16 | USN-6567-1 |
| Ubuntu 20.04 LTS | qemu | 1:4.2-3ubuntu6.28 | USN-6567-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | SLOF | 20210217-1.module+el8.9.0+18724+20190c23 | RHSA-2023:6980 |
| RHEL 8 | hivex +6 | 1.3.18-23.module+el8.9.0+18724+20190c23 | RHSA-2023:6980 |
| RHEL 8 | libguestfs-winsupport | 8.9-1.module+el8.9.0+19846+58c50e4e | RHSA-2023:6980 |
| RHEL 8 | libiscsi +2 | 1.18.0-8.module+el8.9.0+18724+20190c23 | RHSA-2023:6980 |
| RHEL 8 | libnbd +6 | 1.6.0-5.module+el8.9.0+18724+20190c23 | RHSA-2023:6980 |
| RHEL 8 | libtpms +1 | 0.9.1-2.20211126git1ff6fe1f43.module+el8.9.0+18724+20190c23 | RHSA-2023:6980 |
| RHEL 8 | libvirt +27 | 8.0.0-22.module+el8.9.0+19544+b3045133 | RHSA-2023:6980 |
| RHEL 8 | libvirt-dbus | 1.3.0-2.module+el8.9.0+18724+20190c23 | RHSA-2023:6980 |
| RHEL 8 | libvirt-python +1 | 8.0.0-2.module+el8.9.0+18724+20190c23 | RHSA-2023:6980 |
| RHEL 8 | nbdkit +18 | 1.24.0-5.module+el8.9.0+18724+20190c23 | RHSA-2023:6980 |
| RHEL 8 | netcf +2 | 0.2.8-12.module+el8.9.0+18724+20190c23 | RHSA-2023:6980 |
| RHEL 8 | perl-Sys-Virt | 8.0.0-1.module+el8.9.0+18724+20190c23 | RHSA-2023:6980 |
| RHEL 8 | qemu-img +14 | 15:6.2.0-40.module+el8.9.0+20056+d9fb1ac3.1 | RHSA-2023:6980 |
| RHEL 8 | seabios +2 | 1.16.0-4.module+el8.9.0+19570+14a90618 | RHSA-2023:6980 |
| RHEL 8 | sgabios +1 | 1:0.20170427git-3.module+el8.9.0+18724+20190c23 | RHSA-2023:6980 |
| RHEL 8 | supermin +1 | 5.2.1-2.module+el8.9.0+18724+20190c23 | RHSA-2023:6980 |
| RHEL 8 | swtpm +4 | 0.7.0-4.20211109gitb79fd91.module+el8.9.0+18724+20190c23 | RHSA-2023:6980 |
| RHEL 8 | virt-dib +24 | 1:1.44.0-9.module+el8.9.0+18724+20190c23 | RHSA-2023:6980 |
| RHEL 8 | virt-v2v +3 | 1:1.42.0-22.module+el8.9.0+18724+20190c23 | RHSA-2023:6980 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | SLOF | 20210217-1.module_el8.6.0+2880+7d9e3703 | ALSA-2023:6980 |
| AlmaLinux 8 | hivex +6 | 1.3.18-23.module_el8.6.0+2880+7d9e3703 | ALSA-2023:6980 |
| AlmaLinux 8 | libguestfs-winsupport | 8.9-1.module_el8.9.0+3662+ef5fc290.alma.1 | ALSA-2023:6980 |
| AlmaLinux 8 | libiscsi +2 | 1.18.0-8.module_el8.6.0+2880+7d9e3703 | ALSA-2023:6980 |
| AlmaLinux 8 | libnbd +6 | 1.6.0-5.module_el8.6.0+2880+7d9e3703 | ALSA-2023:6980 |
| AlmaLinux 8 | libtpms +1 | 0.9.1-2.20211126git1ff6fe1f43.module_el8.9.0+3659+9c8643f3 | ALSA-2023:6980 |
| AlmaLinux 8 | libvirt +27 | 8.0.0-22.module_el8.9.0+3662+ef5fc290 | ALSA-2023:6980 |
| AlmaLinux 8 | libvirt-dbus | 1.3.0-2.module_el8.6.0+2880+7d9e3703 | ALSA-2023:6980 |
| AlmaLinux 8 | nbdkit +18 | 1.24.0-5.module_el8.8.0+3485+7cffc4a3 | ALSA-2023:6980 |
| AlmaLinux 8 | netcf +2 | 0.2.8-12.module_el8.6.0+2880+7d9e3703 | ALSA-2023:6980 |
| AlmaLinux 8 | perl-Sys-Virt | 8.0.0-1.module_el8.6.0+2880+7d9e3703 | ALSA-2023:6980 |
| AlmaLinux 8 | python3-libvirt | 8.0.0-2.module_el8.7.0+3346+68867adb | ALSA-2023:6980 |
| AlmaLinux 8 | qemu-img +14 | 15:6.2.0-40.module_el8.9.0+3681+41cbbcc0.1.alma.1 | ALSA-2023:6980 |
| AlmaLinux 8 | seabios +2 | 1.16.0-4.module_el8.9.0+3659+9c8643f3 | ALSA-2023:6980 |
| AlmaLinux 8 | sgabios +1 | 1:0.20170427git-3.module_el8.6.0+2880+7d9e3703 | ALSA-2023:6980 |
| AlmaLinux 8 | supermin +1 | 5.2.1-2.module_el8.7.0+3346+68867adb | ALSA-2023:6980 |
| AlmaLinux 8 | swtpm +4 | 0.7.0-4.20211109gitb79fd91.module_el8.7.0+3346+68867adb | ALSA-2023:6980 |
| AlmaLinux 8 | virt-dib +24 | 1:1.44.0-9.module_el8.7.0+3493+5ed0bd1c.alma | ALSA-2023:6980 |
| AlmaLinux 8 | virt-v2v +3 | 1:1.42.0-22.module_el8.9.0+3659+9c8643f3 | ALSA-2023:6980 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | hivex | 1.3.18-23.module+el8.10.0+1590+a67ab969 | RLSA-2023:6980 |
| Rocky Linux 8 | libguestfs | 1:1.44.0-9.module+el8.10.0+1590+a67ab969.rocky | RLSA-2023:6980 |
| Rocky Linux 8 | libiscsi | 1.18.0-8.module+el8.10.0+1590+a67ab969 | RLSA-2023:6980 |
| Rocky Linux 8 | libnbd | 1.6.0-5.module+el8.10.0+1590+a67ab969 | RLSA-2023:6980 |
| Rocky Linux 8 | libtpms | 0.9.1-2.20211126git1ff6fe1f43.module+el8.10.0+1590+a67ab969 | RLSA-2023:6980 |
| Rocky Linux 8 | libvirt-dbus | 1.3.0-2.module+el8.10.0+1590+a67ab969 | RLSA-2023:6980 |
| Rocky Linux 8 | libvirt-python | 8.0.0-2.module+el8.10.0+1590+a67ab969 | RLSA-2023:6980 |
| Rocky Linux 8 | nbdkit | 1.24.0-5.module+el8.10.0+1590+a67ab969 | RLSA-2023:6980 |
| Rocky Linux 8 | netcf | 0.2.8-12.module+el8.10.0+1590+a67ab969 | RLSA-2023:6980 |
| Rocky Linux 8 | perl-Sys-Virt | 8.0.0-1.module+el8.10.0+1590+a67ab969 | RLSA-2023:6980 |
| Rocky Linux 8 | seabios | 1.16.0-4.module+el8.9.0+1408+7b966129 | RLSA-2023:6980 |
| Rocky Linux 8 | sgabios | 1:0.20170427git-3.module+el8.10.0+1590+a67ab969 | RLSA-2023:6980 |
| Rocky Linux 8 | supermin | 5.2.1-2.module+el8.10.0+1590+a67ab969 | RLSA-2023:6980 |
| Rocky Linux 8 | swtpm | 0.7.0-4.20211109gitb79fd91.module+el8.10.0+1590+a67ab969 | RLSA-2023:6980 |
| Rocky Linux 8 | virt-v2v | 1:1.42.0-22.module+el8.10.0+1590+a67ab969 | RLSA-2023:6980 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | qemu | 7.1.0-150500.49.6.1 | SUSE-SU-2023:3082-1 |
| SLES 15 SP4 | qemu | 6.2.0-150400.37.20.1 | SUSE-SU-2023:3234-1 |
| SLES 15 SP3 | qemu | 5.2.0-150300.127.3 | SUSE-SU-2023:3444-1 |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP3 | qemu | 5.2.0-150300.127.3 | SUSE-SU-2023:3444-1 |
| SLE Micro 5.5 | qemu | 7.1.0-150500.49.6.1 | SUSE-SU-2023:3082-2 |
| SLE Micro 5.4 | qemu | 6.2.0-150400.37.20.1 | SUSE-SU-2023:3234-1 |
| SLE Micro 5.3 | qemu | 6.2.0-150400.37.20.1 | SUSE-SU-2023:3234-1 |
| SLE Micro 5.2 | qemu | 5.2.0-150300.127.3 | SUSE-SU-2023:3444-1 |
| SLE Micro 5.1 | qemu | 5.2.0-150300.127.3 | SUSE-SU-2023:3444-1 |
| SLE HPC 15 SP3 | qemu | 5.2.0-150300.127.3 | SUSE-SU-2023:3444-1 |
| SUSE Manager Server 4.2 | qemu | 5.2.0-150300.127.3 | SUSE-SU-2023:3444-1 |
| SUSE Manager Proxy 4.2 | qemu | 5.2.0-150300.127.3 | SUSE-SU-2023:3444-1 |
| SUSE Enterprise Storage 7.1 | qemu | 5.2.0-150300.127.3 | SUSE-SU-2023:3444-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | qemu | 8.0.3-1.1 | openSUSE-SU-2024:13058-1 |
| openSUSE Leap 15.5 | qemu | 7.1.0-150500.49.6.1 | SUSE-SU-2023:3082-1 |
| openSUSE Leap 15.4 | qemu | 6.2.0-150400.37.20.1 | SUSE-SU-2023:3234-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.4 | qemu | 6.2.0-150400.37.20.1 | SUSE-SU-2023:3234-1 |
| openSUSE Leap Micro 5.3 | qemu | 6.2.0-150400.37.20.1 | SUSE-SU-2023:3234-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | qemu | 8.2.0-1 | — |
| Azure Linux 2 (CBL-Mariner) | qemu | 6.2.0-23 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | hivex +4 | 1.3.18-21.module+el8.8.0+21148+e83324c8 | ELSA-2024-12152, ELSA-2023-12855, ELSA-2023-6980 |
| Oracle Linux 8 | libguestfs-appliance | 1:1.44.0-9.0.1.module+el8.8.0+21147+1292344f | ELSA-2023-12855, ELSA-2023-6980 |
| Oracle Linux 8 | libguestfs-winsupport | 8.2-1.module+el8.8.0+21148+e83324c8 | ELSA-2024-12152, ELSA-2023-12855, ELSA-2023-6980 |
| Oracle Linux 8 | libiscsi +2 | 1.18.0-8.module+el8.8.0+21147+1292344f | ELSA-2024-12152, ELSA-2023-12855, ELSA-2023-6980 |
| Oracle Linux 8 | libnbd +3 | 1.2.2-1.module+el8.8.0+21148+e83324c8 | ELSA-2024-12152, ELSA-2023-12855, ELSA-2023-6980 |
| Oracle Linux 8 | libnbd-bash-completion | 1.6.0-5.module+el8.8.0+21147+1292344f | ELSA-2023-12855, ELSA-2023-6980 |
| Oracle Linux 8 | libtpms +1 | 0.9.1-1.20211126git1ff6fe1f43.module+el8.8.0+21147+1292344f | ELSA-2023-12855, ELSA-2023-6980 |
| Oracle Linux 8 | libvirt +29 | 5.7.0-41.module+el8.8.0+21148+e83324c8 | ELSA-2024-12152, ELSA-2023-12855, ELSA-2023-6980 |
| Oracle Linux 8 | libvirt-client-qemu | 9.0.0-3.module+el8.8.0+21147+1292344f | ELSA-2023-12855 |
| Oracle Linux 8 | libvirt-dbus | 1.3.0-2.module+el8.8.0+21147+1292344f | ELSA-2024-12152, ELSA-2023-12855, ELSA-2023-6980 |
| Oracle Linux 8 | libvirt-wireshark | 8.0.0-22.0.1.module+el8.9.0+90052+d3bf71d8 | ELSA-2023-12855, ELSA-2023-6980 |
| Oracle Linux 8 | nbdkit +13 | 1.16.2-4.0.1.module+el8.8.0+21148+e83324c8 | ELSA-2024-12152, ELSA-2023-12855, ELSA-2023-6980 |
| Oracle Linux 8 | nbdkit-nbd-plugin +4 | 1.24.0-4.module+el8.8.0+21147+1292344f | ELSA-2023-12855, ELSA-2023-6980 |
| Oracle Linux 8 | netcf +2 | 0.2.8-12.module+el8.8.0+21147+1292344f | ELSA-2024-12152, ELSA-2023-12855, ELSA-2023-6980 |
| Oracle Linux 8 | ocaml-hivex +1 | 1.3.18-23.module+el8.9.0+90075+85334608 | ELSA-2023-6980 |
| Oracle Linux 8 | ocaml-libguestfs +1 | 1:1.44.0-9.0.2.module+el8.9.0+90052+d3bf71d8 | ELSA-2023-6980 |
| Oracle Linux 8 | ocaml-libnbd +1 | 1.6.0-5.module+el8.9.0+90052+d3bf71d8 | ELSA-2023-6980 |
| Oracle Linux 8 | perl-Sys-Virt | 4.5.0-5.module+el8.8.0+21148+e83324c8 | ELSA-2024-12152, ELSA-2023-12855, ELSA-2023-6980 |
| Oracle Linux 8 | qemu-img +9 | 15:4.2.1-28.module+el8.8.0+21148+e83324c8 | ELSA-2024-12152, ELSA-2023-12855, ELSA-2023-6980 |
| Oracle Linux 8 | qemu-kvm-docs +4 | 15:6.2.0-40.module+el8.9.0+90073+85334608.1 | ELSA-2023-6980 |
| Oracle Linux 8 | qemu-virtiofsd | 15:7.2.0-5.module+el8.8.0+21147+1292344f | ELSA-2023-12855 |
| Oracle Linux 8 | seabios +2 | 1.16.0-3.module+el8.8.0+21147+1292344f | ELSA-2024-12152, ELSA-2023-12855, ELSA-2023-6980 |
| Oracle Linux 8 | sgabios +1 | 1:0.20170427git-3.module+el8.8.0+21147+1292344f | ELSA-2024-12152, ELSA-2023-12855, ELSA-2023-6980 |
| Oracle Linux 8 | supermin +1 | 5.1.19-10.module+el8.8.0+21148+e83324c8 | ELSA-2024-12152, ELSA-2023-12855, ELSA-2023-6980 |
| Oracle Linux 8 | swtpm +4 | 0.7.0-4.20211109gitb79fd91.module+el8.8.0+21147+1292344f | ELSA-2023-12855, ELSA-2023-6980 |
| Oracle Linux 8 | virt-dib +23 | 1:1.40.2-28.0.4.module+el8.8.0+21148+e83324c8 | ELSA-2024-12152, ELSA-2023-12855, ELSA-2023-6980 |
| Oracle Linux 8 | virt-v2v-man-pages-ja +2 | 1:1.42.0-21.module+el8.8.0+21147+1292344f | ELSA-2023-12855, ELSA-2023-6980 |
| Oracle Linux 7 | qemu +12 | 15:4.2.1-28.el7 | ELSA-2023-12835, ELSA-2023-12834 |
Advisories 17
- ALSA-2023:6980 Moderate: virt:rhel and virt-devel:rhel security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2023:6980 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-6567-1 qemu vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- RLSA-2023:6980 Moderate: virt:rhel and virt-devel:rhel security, bug fix, and enhancement update Rocky Linux Security Advisories · Mar 18, 2026
- WID-SEC-2023-1965 QEMU: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Mar 17, 2026
- SUSE-SU-2023:3234-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:3082-2 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:3082-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:3444-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13058-1 qemu-8.0.3-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- ICSA-24-046-11 Siemens SCALANCE XCM-/XRM-300 CISA ICS & IT advisories · Feb 13, 2024
- SSA-806742 SSA-806742: Multiple Vulnerabilities in SCALANCE XCM-/XRM-300 before V2.4 Siemens ProductCERT · Feb 13, 2024
- ELSA-2024-12152 Moderate: virt:kvm_utils1 security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Feb 12, 2024
- ELSA-2023-6980 Moderate: virt:ol and virt-devel:rhel security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Nov 18, 2023
- ELSA-2023-12855 Important: kvm_utils3 security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Oct 7, 2023
- ELSA-2023-12835 Moderate: qemu security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Sep 22, 2023
- ELSA-2023-12834 Moderate: qemu security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Sep 22, 2023