libvirt version before 4.2.0-rc1 is vulnerable to a resource exhaustion as a result of an incomplete fix for CVE-2018-5748 that affects QEM…

published 2018-03-28 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-11717

cvss: 7.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 2.9%; EPSS 2.9% chance of exploitation in 30 days, percentile 86%
public exploits: 0; none known

libvirt version before 4.2.0-rc1 is vulnerable to a resource exhaustion as a result of an incomplete fix for CVE-2018-5748 that affects QEMU monitor but now also triggered via QEMU guest agent.

Patch / fix

distros 5 links 1

debian ubuntu red hat suse opensuse

libvirt Debian 14, Debian 13, Debian 12 4.1.0-1

debian advisories DEBIAN-CVE-2018-1064

libvirt Ubuntu 14.04 LTS 1.2.2-0ubuntu13.1.27
libvirt Ubuntu 16.04 LTS 1.3.1-1ubuntu10.24
libvirt Ubuntu 18.04 LTS 4.0.0-1ubuntu8.2

ubuntu advisories UBUNTU-CVE-2018-1064

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

libvirt RHEL 7 3.9.0-14.el7_5.4
libvirt-nss RHEL 7 3.9.0-14.el7_5.4
libvirt-libs RHEL 7 3.9.0-14.el7_5.4
libvirt-admin RHEL 7 3.9.0-14.el7_5.4
libvirt-client RHEL 7 3.9.0-14.el7_5.4
libvirt-daemon RHEL 7 3.9.0-14.el7_5.4
libvirt-daemon-kvm RHEL 7 3.9.0-14.el7_5.4
libvirt-daemon-lxc RHEL 7 3.9.0-14.el7_5.4

red hat advisories RHSA-2018:1396 RHSA-2018:1929

libvirt SLES 11 SP3-TERADATA, SLES 11 SP3-LTSS, SLE Point of Sale 11 SP3 1.0.5.9-21.5.1
libvirt SLES for SAP 12 SP3, SLES 12 SP3, SLED 12 SP3 +1 more 3.3.0-5.19.2
virt-manager SLES for SAP 12 SP3, SLES 12 SP3, SLED 12 SP3 1.4.1-5.8.1
libvirt SLES for SAP 12 SP2, SLES for Raspberry Pi 12 SP2, SLES 12 SP2 +3 more 2.0.0-27.34.1
libvirt SLES for SAP 11 SP4, SLES 11 SP4, SLE Software Development Kit 11 SP4 1.2.5-23.6.1
libvirt SLES 12-LTSS 1.2.5-27.13.1
libvirt SLES for SAP 12 SP1, SLES 12 SP1-LTSS 1.2.18.4-22.3.1

suse advisories SUSE-SU-2018:2141-1 SUSE-SU-2018:2082-1 SUSE-SU-2018:1295-1 SUSE-SU-2018:0920-1 SUSE-SU-2018:0861-1 SUSE-SU-2018:0838-1

libvirt openSUSE Tumbleweed 7.7.0-2.1

opensuse advisories openSUSE-SU-2024:11008-1

bugzilla.redhat.com/show_bug.cgi?id=1550672 advisory

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-1064 updated 2026-11-06 cvss 3.3

libvirt: Incomplete fix for CVE-2018-5748 triggered by QEMU guest agent

Red Hat Enterprise Linux Client (v. 7) libvirt 3.9.0-14.el7_5.4, libvirt-libs 3.9.0-14.el7_5.4, libvirt-client 3.9.0-14.el7_5.4, libvirt-daemon 3.9.0-14.el7_5.4, libvirt-daemon-kvm 3.9.0-14.el7_5.4, libvirt-daemon-driver-lxc 3.9.0-14.el7_5.4, +17 more Red Hat Enterprise Linux Client Optional (v. 7) libvirt-nss 3.9.0-14.el7_5.4, libvirt-admin 3.9.0-14.el7_5.4, libvirt-daemon-lxc 3.9.0-14.el7_5.4, libvirt-login-shell 3.9.0-14.el7_5.4, libvirt-lock-sanlock 3.9.0-14.el7_5.4 Red Hat Enterprise Linux ComputeNode (v. 7) libvirt 3.9.0-14.el7_5.4, libvirt-libs 3.9.0-14.el7_5.4, libvirt-client 3.9.0-14.el7_5.4 Red Hat Enterprise Linux ComputeNode Optional (v. 7) libvirt 3.9.0-14.el7_5.4, libvirt-nss 3.9.0-14.el7_5.4, libvirt-admin 3.9.0-14.el7_5.4, libvirt-daemon 3.9.0-14.el7_5.4, libvirt-daemon-kvm 3.9.0-14.el7_5.4, libvirt-daemon-lxc 3.9.0-14.el7_5.4, +20 more
fixed: vendor fix RHSA-2018:1396
Red Hat Enterprise Linux Desktop (v. 6) libvirt 0.10.2-64.el6, libvirt-client 0.10.2-64.el6, libvirt-python 0.10.2-64.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) libvirt-lock-sanlock 0.10.2-64.el6
fixed: vendor fix RHSA-2018:1929
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) libvirt 3.9.0-14.el7_5.4, libvirt-libs 3.9.0-14.el7_5.4, libvirt-client 3.9.0-14.el7_5.4, libvirt-daemon 3.9.0-14.el7_5.4, libvirt-daemon-kvm 3.9.0-14.el7_5.4, libvirt-daemon-driver-lxc 3.9.0-14.el7_5.4, +15 more Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) libvirt 3.9.0-14.el7_5.4, libvirt-nss 3.9.0-14.el7_5.4, libvirt-libs 3.9.0-14.el7_5.4, libvirt-admin 3.9.0-14.el7_5.4, libvirt-client 3.9.0-14.el7_5.4, libvirt-daemon 3.9.0-14.el7_5.4, +20 more
fixed: vendor fix RHSA-2018:1396
Red Hat Enterprise Linux HPC Node (v. 6) libvirt 0.10.2-64.el6, libvirt-client 0.10.2-64.el6, libvirt-python 0.10.2-64.el6 Red Hat Enterprise Linux HPC Node Optional (v. 6) libvirt-lock-sanlock 0.10.2-64.el6 Red Hat Enterprise Linux Server (v. 6) libvirt 0.10.2-64.el6, libvirt-client 0.10.2-64.el6, libvirt-python 0.10.2-64.el6
fixed: vendor fix RHSA-2018:1929
Red Hat Enterprise Linux Server (v. 7) libvirt 3.9.0-14.el7_5.4, libvirt-libs 3.9.0-14.el7_5.4, libvirt-client 3.9.0-14.el7_5.4, libvirt-daemon 3.9.0-14.el7_5.4, libvirt-daemon-kvm 3.9.0-14.el7_5.4, libvirt-daemon-driver-lxc 3.9.0-14.el7_5.4, +17 more
fixed: vendor fix RHSA-2018:1396
Red Hat Enterprise Linux Server Optional (v. 6) libvirt-lock-sanlock 0.10.2-64.el6
fixed: vendor fix RHSA-2018:1929
Red Hat Enterprise Linux Server Optional (v. 7) libvirt-nss 3.9.0-14.el7_5.4, libvirt-admin 3.9.0-14.el7_5.4, libvirt-daemon-lxc 3.9.0-14.el7_5.4, libvirt-login-shell 3.9.0-14.el7_5.4, libvirt-lock-sanlock 3.9.0-14.el7_5.4
fixed: vendor fix RHSA-2018:1396
Red Hat Enterprise Linux Workstation (v. 6) libvirt 0.10.2-64.el6, libvirt-client 0.10.2-64.el6, libvirt-python 0.10.2-64.el6
fixed: vendor fix RHSA-2018:1929

show 5 more

Red Hat Enterprise Linux Workstation (v. 7) libvirt 3.9.0-14.el7_5.4, libvirt-libs 3.9.0-14.el7_5.4, libvirt-client 3.9.0-14.el7_5.4, libvirt-daemon 3.9.0-14.el7_5.4, libvirt-daemon-kvm 3.9.0-14.el7_5.4, libvirt-daemon-driver-lxc 3.9.0-14.el7_5.4, +17 more
fixed: vendor fix RHSA-2018:1396
Red Hat Enterprise Linux Workstation Optional (v. 6) libvirt-lock-sanlock 0.10.2-64.el6
fixed: vendor fix RHSA-2018:1929
Red Hat Enterprise Linux Workstation Optional (v. 7) libvirt-nss 3.9.0-14.el7_5.4, libvirt-admin 3.9.0-14.el7_5.4, libvirt-daemon-lxc 3.9.0-14.el7_5.4, libvirt-login-shell 3.9.0-14.el7_5.4, libvirt-lock-sanlock 3.9.0-14.el7_5.4
fixed: vendor fix RHSA-2018:1396
Red Hat Storage Server 3 libvirt-lock-sanlock 0.10.2-64.el6
fixed: vendor fix RHSA-2018:1929
Red Hat Enterprise Linux 5 libvirt Red Hat Enterprise Linux 8 libvirt, libvirt-nss, libvirt-libs, libvirt-admin, libvirt-client, libvirt-daemon, +22 more
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.85% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.0	7.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

libvirt libvirt

Classification

Weakness

CWE-400 Uncontrolled Resource Consumption

References

bugzilla.redhat.com /show_bug.cgi?id=1550672
issue-tracking, patch, third-party-advisory
usn.ubuntu.com /3680-1/
vendor-advisory
access.redhat.com /errata/RHSA-2018:1396
vendor-advisory
debian.org /security/2018/dsa-4137
vendor-advisory, third-party-advisory
access.redhat.com /errata/RHSA-2018:1929
vendor-advisory
libvirt.org /git/?p=libvirt.git%3Ba=commit%3Bh=fbf31e1a4cd19d6f6e33e0937a009775cd7d9513
lists.debian.org /debian-lts-announce/2018/03/msg00018.html
mailing-list, third-party-advisory

Sources

CVE List CVE-2018-1064
NVD CVE-2018-1064

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary