Description
A NULL pointer dereference flaw was discovered in libvirt before version 5.0.0 in the way it gets interface information through the QEMU agent. An attacker in a guest VM can use this flaw to crash libvirtd and cause a denial of service.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| The libvirt Project | libvirt | 5.0.0 | — |
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 | libvirt | 5.0.0-1 | — |
| Debian 13 | libvirt | 5.0.0-1 | — |
| Debian 12 | libvirt | 5.0.0-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | libvirt | 4.0.0-1ubuntu8.8 | USN-3909-1 |
| Ubuntu 16.04 LTS | libvirt | 1.3.1-1ubuntu10.25 | USN-3909-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | libvirt +30 | 4.5.0-23.el7 | RHSA-2019:2294 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 | libvirt | 4.0.0-9.16.7 | SUSE-SU-2019:0936-1 |
| SLES 12 SP4 | libvirt | 4.0.0-8.9.1 | SUSE-SU-2019:0948-1 |
| SLES 12 SP3 | libvirt | 3.3.0-5.30.1 | SUSE-SU-2019:1042-1 |
| SLES 12 SP2 | libvirt | 2.0.0-27.48.1 | SUSE-SU-2019:0553-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP4 | libvirt | 4.0.0-8.9.1 | SUSE-SU-2019:0948-1 |
| SLES for SAP 12 SP3 | libvirt | 3.3.0-5.30.1 | SUSE-SU-2019:1042-1 |
| SLES for SAP 12 SP2 | libvirt | 2.0.0-27.48.1 | SUSE-SU-2019:0553-1 |
| SUSE OpenStack Cloud 7 | libvirt | 2.0.0-27.48.1 | SUSE-SU-2019:0553-1 |
| SUSE Enterprise Storage 4 | libvirt | 2.0.0-27.48.1 | SUSE-SU-2019:0553-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.0 | libvirt | 4.0.0-lp150.7.10.4 | openSUSE-SU-2019:1288-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | libvirt +30 | 4.5.0-23.amzn2 | ALAS2-2019-1361 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | libvirt +30 | 4.5.0-23.el7 | ELSA-2019-2294 |
Advisories 9
- RHSA-2019:2294 Red Hat Security Advisory: libvirt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-3909-1 libvirt vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- openSUSE-SU-2019:1288-1 Security update for libvirt SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:1042-1 Security update for libvirt SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0553-1 Security update for libvirt SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0948-1 Security update for libvirt SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0936-1 Security update for libvirt SUSE / openSUSE Security Updates · Feb 4, 2026
- ALAS2-2019-1361 Moderate: libvirt security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Nov 14, 2019
- ELSA-2019-2294 Moderate: libvirt security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 13, 2019
References
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3840
- https://bugzilla.redhat.com/show_bug.cgi?id=1663051
- https://www.redhat.com/archives/libvir-list/2019-January/msg00241.html
- openSUSE-SU-2019:1288 vendor-advisory
- openSUSE-SU-2019:1294 vendor-advisory
- FEDORA-2019-b3bfc61567 vendor-advisory
- RHSA-2019:2294 vendor-advisory