Description
An improper locking issue was found in the virStoragePoolLookupByTargetPath API of libvirt. It occurs in the storagePoolLookupByTargetPath function where a locked virStoragePoolObj object is not properly released on ACL permission failure. Clients connecting to the read-write socket with limited ACL permissions could use this flaw to acquire the lock and prevent other users from accessing storage pool/volume APIs, resulting in a denial of service condition. The highest threat from this vulnerability is to system availability.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | libvirt | Fixedin - libvert v7.6.0-rc1 and above | — |
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 | libvirt | 7.6.0-1 | — |
| Debian 13 | libvirt | 7.6.0-1 | — |
| Debian 12 | libvirt | 7.6.0-1 | — |
| Debian 10 | libvirt | 5.0.0-4+deb10u2 | DLA-3778-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | libvirt | 7.6.0-0ubuntu3 | — |
| Ubuntu 20.04 LTS | libvirt | 6.0.0-0ubuntu8.16 | USN-5399-1 |
| Ubuntu 18.04 LTS | libvirt | 4.0.0-1ubuntu8.21 | USN-5399-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | SLOF | 20191022-3.git899d9883.module+el8.2.0+5449+efc036dd | RHSA-2021:4191, RHSA-2021:3704, RHSA-2021:3703 |
| RHEL 8 | hivex +6 | 1.3.18-20.module+el8.2.0+5588+63a201c3 | RHSA-2021:4191, RHSA-2021:3704, RHSA-2021:3703 |
| RHEL 8 | libguestfs-winsupport | 8.2-1.module+el8.3.0+6423+e4cb6418 | RHSA-2021:4191, RHSA-2021:3704, RHSA-2021:3703 |
| RHEL 8 | libiscsi +2 | 1.18.0-8.module+el8.1.0+4066+0f1aadab | RHSA-2021:4191, RHSA-2021:3704, RHSA-2021:3703 |
| RHEL 8 | libnbd +5 | 1.2.2-1.module+el8.2.0+5644+32ac38d4 | RHSA-2021:4191, RHSA-2021:3704, RHSA-2021:3703 |
| RHEL 8 | libnbd-bash-completion | 1.6.0-3.module+el8.4.0+9856+bbc47853 | RHSA-2021:3703 |
| RHEL 8 | libtpms +1 | 0.7.0-1.20191018gitdc116933b7.module+el8.2.0+4793+b09dd2fb | RHSA-2021:3704, RHSA-2021:3703 |
| RHEL 8 | libvirt +28 | 6.0.0-25.6.module+el8.2.1+12457+868e9540 | RHSA-2021:4191, RHSA-2021:3704, RHSA-2021:3703 |
| RHEL 8 | libvirt-dbus | 1.3.0-2.module+el8.2.0+4793+b09dd2fb | RHSA-2021:4191, RHSA-2021:3704, RHSA-2021:3703 |
| RHEL 8 | libvirt-python +1 | 6.0.0-1.module+el8.2.0+5453+31b2b136 | RHSA-2021:4191, RHSA-2021:3704, RHSA-2021:3703 |
| RHEL 8 | libvirt-wireshark | 7.0.0-14.4.module+el8.4.0+12413+d23780e6 | RHSA-2021:3703 |
| RHEL 8 | nbdkit +13 | 1.16.2-4.module+el8.2.1+6710+effcb1df | RHSA-2021:4191, RHSA-2021:3704, RHSA-2021:3703 |
| RHEL 8 | nbdkit-nbd-plugin +4 | 1.24.0-1.module+el8.4.0+9341+96cf2672 | RHSA-2021:3703 |
| RHEL 8 | netcf +2 | 0.2.8-12.module+el8.1.0+4066+0f1aadab | RHSA-2021:4191, RHSA-2021:3704, RHSA-2021:3703 |
| RHEL 8 | perl-Sys-Virt | 6.0.0-1.module+el8.2.0+5488+267def79 | RHSA-2021:4191, RHSA-2021:3704, RHSA-2021:3703 |
| RHEL 8 | python-pyvmomi +1 | 6.7.1-7.module+el8.2.0+4793+b09dd2fb | RHSA-2021:3704, RHSA-2021:3703 |
| RHEL 8 | qemu-img +10 | 15:4.2.0-29.module+el8.2.1+12598+39ddf37a.9 | RHSA-2021:4191, RHSA-2021:3704, RHSA-2021:3703 |
| RHEL 8 | qemu-kiwi +3 | 15:5.2.0-16.module+el8.4.0+12596+209e4022.10 | RHSA-2021:3703 |
| RHEL 8 | seabios +2 | 1.13.0-2.module+el8.2.1+7284+aa32a2c4 | RHSA-2021:4191, RHSA-2021:3704, RHSA-2021:3703 |
| RHEL 8 | sgabios +1 | 1:0.20170427git-3.module+el8.1.0+4066+0f1aadab | RHSA-2021:4191, RHSA-2021:3704, RHSA-2021:3703 |
| RHEL 8 | supermin +1 | 5.1.19-10.module+el8.2.0+4793+b09dd2fb | RHSA-2021:4191, RHSA-2021:3704, RHSA-2021:3703 |
| RHEL 8 | swtpm +3 | 0.2.0-2.20200127gitff5a83b.module+el8.2.0+5579+d71178e0 | RHSA-2021:3704, RHSA-2021:3703 |
| RHEL 8 | virglrenderer +2 | 0.8.2-1.module+el8.2.0+5777+d9c2af8c | RHSA-2021:3704 |
| RHEL 8 | virt-dib +25 | 1:1.40.2-24.module+el8.2.1+7154+47ffd890 | RHSA-2021:4191, RHSA-2021:3704, RHSA-2021:3703 |
| RHEL 8 | virt-v2v-man-pages-ja +2 | 1:1.42.0-9.module+el8.4.0+9561+069bb9c1 | RHSA-2021:3703 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | hivex +4 | 1.3.18-21.module_el8.5.0+2608+72063365 | ALSA-2021:4191 |
| AlmaLinux 8 | libguestfs-winsupport | 8.2-1.module_el8.5.0+2608+72063365 | ALSA-2021:4191 |
| AlmaLinux 8 | libiscsi +2 | 1.18.0-8.module_el8.5.0+2608+72063365 | ALSA-2021:4191 |
| AlmaLinux 8 | libnbd +3 | 1.2.2-1.module_el8.5.0+2608+72063365 | ALSA-2021:4191 |
| AlmaLinux 8 | libvirt +28 | 6.0.0-37.module_el8.5.0+2608+72063365 | ALSA-2021:4191 |
| AlmaLinux 8 | libvirt-dbus | 1.3.0-2.module_el8.5.0+2608+72063365 | ALSA-2021:4191 |
| AlmaLinux 8 | nbdkit +13 | 1.16.2-4.module_el8.5.0+2608+72063365 | ALSA-2021:4191 |
| AlmaLinux 8 | netcf +2 | 0.2.8-12.module_el8.5.0+2608+72063365 | ALSA-2021:4191 |
| AlmaLinux 8 | perl-Sys-Virt +1 | 6.0.0-1.module_el8.5.0+2608+72063365 | ALSA-2021:4191 |
| AlmaLinux 8 | seabios +2 | 1.13.0-2.module_el8.5.0+2608+72063365 | ALSA-2021:4191 |
| AlmaLinux 8 | sgabios +1 | 1:0.20170427git-3.module_el8.5.0+2608+72063365 | ALSA-2021:4191 |
| AlmaLinux 8 | supermin +1 | 5.1.19-10.module_el8.5.0+2608+72063365 | ALSA-2021:4191 |
| AlmaLinux 8 | virt-dib +23 | 1:1.40.2-28.module_el8.5.0+2608+72063365.alma | ALSA-2021:4191 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | hivex | 1.3.18-21.module+el8.4.0+642+7e26f5e1 | RLSA-2021:4191 |
| Rocky Linux 8 | libguestfs | 1:1.40.2-28.module+el8.5.0+670+c4aa478c | RLSA-2021:4191 |
| Rocky Linux 8 | libguestfs-winsupport | 8.2-1.module+el8.4.0+534+4680a14e | RLSA-2021:4191 |
| Rocky Linux 8 | libiscsi | 1.18.0-8.module+el8.4.0+534+4680a14e | RLSA-2021:4191 |
| Rocky Linux 8 | libnbd | 1.2.2-1.module+el8.4.0+534+4680a14e | RLSA-2021:4191 |
| Rocky Linux 8 | libvirt | 6.0.0-37.module+el8.5.0+670+c4aa478c | RLSA-2021:4191 |
| Rocky Linux 8 | libvirt-dbus | 1.3.0-2.module+el8.4.0+534+4680a14e | RLSA-2021:4191 |
| Rocky Linux 8 | nbdkit | 1.16.2-4.module+el8.4.0+534+4680a14e | RLSA-2021:4191 |
| Rocky Linux 8 | netcf | 0.2.8-12.module+el8.4.0+534+4680a14e | RLSA-2021:4191 |
| Rocky Linux 8 | perl-Sys-Virt +1 | 6.0.0-1.module+el8.4.0+534+4680a14e | RLSA-2021:4191 |
| Rocky Linux 8 | qemu-kvm | 5:4.2.0-59.module+el8.5.0+670+c4aa478c | RLSA-2021:4191 |
| Rocky Linux 8 | seabios | 1.13.0-2.module+el8.4.0+534+4680a14e | RLSA-2021:4191 |
| Rocky Linux 8 | sgabios | 1:0.20170427git-3.module+el8.4.0+534+4680a14e | RLSA-2021:4191 |
| Rocky Linux 8 | supermin | 5.1.19-10.module+el8.4.0+534+4680a14e | RLSA-2021:4191 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | libvirt | 7.1.0-6.5.1 | SUSE-SU-2021:2812-1 |
| SLES 15 SP2 | libvirt | 6.0.0-13.21.1 | SUSE-SU-2021:3586-1 |
| SLES 15 SP1 | libvirt | 5.1.0-8.29.1 | SUSE-SU-2021:3540-1 |
| SLES 12 SP5 | libvirt | 5.1.0-13.25.1 | SUSE-SU-2021:3277-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP1 | libvirt | 5.1.0-8.29.1 | SUSE-SU-2021:3540-1 |
| SLES for SAP 12 SP5 | libvirt | 5.1.0-13.25.1 | SUSE-SU-2021:3277-1 |
| SLE Micro 5.0 | libvirt | 6.0.0-13.21.1 | SUSE-SU-2021:3586-1 |
| SLE HPC 15 SP1 | libvirt | 5.1.0-8.29.1 | SUSE-SU-2021:3540-1 |
| SUSE Enterprise Storage 6 | libvirt | 5.1.0-8.29.1 | SUSE-SU-2021:3540-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libvirt | 7.7.0-2.1 | openSUSE-SU-2024:11008-1 |
| openSUSE Leap 15.3 | libvirt | 7.1.0-6.5.1 | openSUSE-SU-2021:2812-1 |
| openSUSE Leap 15.2 | libvirt | 6.0.0-lp152.9.15.1 | openSUSE-SU-2021:1451-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | hivex +6 | 1.3.18-21.module+el8.5.0+20365+3abb8f5b | ELSA-2021-4191 |
| Oracle Linux 8 | libguestfs-winsupport | 8.2-1.module+el8.3.0+7860+a7792d29 | ELSA-2021-4191 |
| Oracle Linux 8 | libiscsi +2 | 1.18.0-8.module+el8.3.0+7860+a7792d29 | ELSA-2021-4191 |
| Oracle Linux 8 | libnbd +5 | 1.2.2-1.module+el8.3.0+7860+a7792d29 | ELSA-2021-4191 |
| Oracle Linux 8 | libvirt +28 | 6.0.0-37.0.1.module+el8.5.0+20365+3abb8f5b | ELSA-2021-4191 |
| Oracle Linux 8 | libvirt-dbus | 1.3.0-2.module+el8.3.0+7860+a7792d29 | ELSA-2021-4191 |
| Oracle Linux 8 | nbdkit +13 | 1.16.2-4.0.1.module+el8.3.0+7860+a7792d29 | ELSA-2021-4191 |
| Oracle Linux 8 | netcf +2 | 0.2.8-12.module+el8.3.0+7860+a7792d29 | ELSA-2021-4191 |
| Oracle Linux 8 | perl-Sys-Virt +1 | 6.0.0-1.module+el8.3.0+7860+a7792d29 | ELSA-2021-4191 |
| Oracle Linux 8 | qemu-img +10 | 15:4.2.0-59.module+el8.5.0+20410+46b2d321 | ELSA-2021-4191 |
| Oracle Linux 8 | seabios +2 | 1.13.0-2.module+el8.3.0+7860+a7792d29 | ELSA-2021-4191 |
| Oracle Linux 8 | sgabios +1 | 1:0.20170427git-3.module+el8.3.0+7860+a7792d29 | ELSA-2021-4191 |
| Oracle Linux 8 | supermin +1 | 5.1.19-10.module+el8.3.0+7860+a7792d29 | ELSA-2021-4191 |
| Oracle Linux 8 | virt-dib +25 | 1:1.40.2-28.0.1.module+el8.5.0+20363+3abb8f5b | ELSA-2021-4191 |
Advisories 16
- ALSA-2021:4191 Moderate: virt:rhel and virt-devel:rhel security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2021:3704 Red Hat Security Advisory: virt:8.2 and virt-devel:8.2 security update Red Hat Security Advisories (RHSA) · Jul 5, 2026
- RHSA-2021:3703 Red Hat Security Advisory: virt:av and virt-devel:av security and bug fix update Red Hat Security Advisories (RHSA) · Jul 5, 2026
- RHSA-2021:4191 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-5399-1 libvirt vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DLA-3778-1 libvirt - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2021:4191 Moderate: virt:rhel and virt-devel:rhel security, bug fix, and enhancement update Rocky Linux Security Advisories · Feb 5, 2026
- SUSE-SU-2021:3277-1 Security update for libvirt SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:2812-1 Security update for libvirt SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11008-1 libvirt-7.7.0-2.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:1451-1 Security update for libvirt SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3586-1 Security update for libvirt SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2812-1 Security update for libvirt SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3540-1 Security update for libvirt SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2022-1728 Red Enterprise Linux Advanced Virtualization: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 2, 2024
- ELSA-2021-4191 Moderate: virt:ol and virt-devel:ol security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Nov 16, 2021
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1986094
- https://libvirt.org/git/?p=libvirt.git%3Ba=commit%3Bh=447f69dec47e1b0bd15ecd7cd49a9fd3b050fb87
- https://gitlab.com/libvirt/libvirt/-/commit/447f69dec47e1b0bd15ecd7cd49a9fd3b050fb87
- https://security.netapp.com/advisory/ntap-20220331-0005/
- GLSA-202210-06 vendor-advisory
- https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html