Description
A NULL pointer dereference issue was found in the block mirror layer of QEMU in versions prior to 6.2.0. The `self` pointer is dereferenced in mirror_wait_on_conflicts() without ensuring that it's not NULL. A malicious unprivileged user within the guest could use this flaw to crash the QEMU process on the host when writing data reaches the threshold of mirroring node.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | QEMU | qemu-kvm 6.2.0 | — |
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 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | SLOF | 20210217-1.module+el8.6.0+14480+c0a3aa0f | RHSA-2022:1759 |
| RHEL 8 | hivex +6 | 1.3.18-23.module+el8.6.0+14480+c0a3aa0f | RHSA-2022:1759 |
| RHEL 8 | libguestfs-winsupport | 8.6-1.module+el8.6.0+14480+c0a3aa0f | RHSA-2022:1759 |
| RHEL 8 | libiscsi +2 | 1.18.0-8.module+el8.6.0+14480+c0a3aa0f | RHSA-2022:1759 |
| RHEL 8 | libnbd +6 | 1.6.0-5.module+el8.6.0+14480+c0a3aa0f | RHSA-2022:1759 |
| RHEL 8 | libtpms +1 | 0.9.1-0.20211126git1ff6fe1f43.module+el8.6.0+14480+c0a3aa0f | RHSA-2022:1759 |
| RHEL 8 | libvirt +27 | 8.0.0-5.module+el8.6.0+14480+c0a3aa0f | RHSA-2022:1759 |
| RHEL 8 | libvirt-dbus | 1.3.0-2.module+el8.6.0+14480+c0a3aa0f | RHSA-2022:1759 |
| RHEL 8 | nbdkit +18 | 1.24.0-4.module+el8.6.0+14480+c0a3aa0f | RHSA-2022:1759 |
| RHEL 8 | netcf +2 | 0.2.8-12.module+el8.6.0+14480+c0a3aa0f | RHSA-2022:1759 |
| RHEL 8 | perl-Sys-Virt +2 | 8.0.0-1.module+el8.6.0+14480+c0a3aa0f | RHSA-2022:1759 |
| RHEL 8 | qemu-img +14 | 15:6.2.0-11.module+el8.6.0+14707+5aa4b42d | RHSA-2022:1759 |
| RHEL 8 | seabios +2 | 1.15.0-2.module+el8.6.0+14757+c25ee005 | RHSA-2022:1759 |
| RHEL 8 | sgabios +1 | 1:0.20170427git-3.module+el8.6.0+14480+c0a3aa0f | RHSA-2022:1759 |
| RHEL 8 | supermin +1 | 5.2.1-1.module+el8.6.0+14480+c0a3aa0f | RHSA-2022:1759 |
| RHEL 8 | swtpm +4 | 0.7.0-1.20211109gitb79fd91.module+el8.6.0+14480+c0a3aa0f | RHSA-2022:1759 |
| RHEL 8 | virt-dib +24 | 1:1.44.0-5.module+el8.6.0+14480+c0a3aa0f | RHSA-2022:1759 |
| RHEL 8 | virt-v2v +3 | 1:1.42.0-18.module+el8.6.0+14480+c0a3aa0f | RHSA-2022:1759 |
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 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | qemu | 6.2.0-2 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | hivex +4 | 1.3.18-21.module+el8.5.0+20514+67db989a | ELSA-2022-9364, ELSA-2022-1759 |
| Oracle Linux 8 | libguestfs-winsupport | 8.2-1.module+el8.5.0+20514+67db989a | ELSA-2022-9364, ELSA-2022-1759 |
| Oracle Linux 8 | libiscsi +2 | 1.18.0-8.module+el8.5.0+20514+67db989a | ELSA-2022-9364, ELSA-2022-1759 |
| Oracle Linux 8 | libnbd +3 | 1.2.2-1.module+el8.5.0+20514+67db989a | ELSA-2022-9364, 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+20514+67db989a | ELSA-2022-9364, ELSA-2022-1759 |
| Oracle Linux 8 | libvirt-dbus | 1.3.0-2.module+el8.5.0+20514+67db989a | ELSA-2022-9364, 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+20514+67db989a | ELSA-2022-9364, 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+20514+67db989a | ELSA-2022-9364, 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+20514+67db989a | ELSA-2022-9364, ELSA-2022-1759 |
| Oracle Linux 8 | qemu-img +9 | 15:4.2.1-16.module+el8.5.0+20514+67db989a | ELSA-2022-9364, 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+20514+67db989a | ELSA-2022-9364, ELSA-2022-1759 |
| Oracle Linux 8 | sgabios +1 | 1:0.20170427git-3.module+el8.5.0+20514+67db989a | ELSA-2022-9364, ELSA-2022-1759 |
| Oracle Linux 8 | supermin +1 | 5.1.19-10.module+el8.5.0+20514+67db989a | ELSA-2022-9364, 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+20514+67db989a | ELSA-2022-9364, 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 | 15:4.2.1-16.el7 | ELSA-2022-9344 |
Advisories 8
- 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
- RLSA-2022:1759 Moderate: virt:rhel and virt-devel:rhel security, bug fix, and enhancement update Rocky Linux Security Advisories · Feb 4, 2026
- WID-SEC-2022-1125 QEMU: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Sep 2, 2024
- WID-SEC-2023-1969 HPE Fabric OS: Mehrere Schwachstellen ermöglichen Privilegieneskalation BSI CERT-Bund (WID) · Aug 6, 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-2022-9364 Important: virt:kvm_utils security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 9, 2022
- ELSA-2022-9344 Important: qemu security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Apr 29, 2022