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Fencer Vulns
medium 6.5

CVE-2023-3750 json

Libvirt: improper locking in virstoragepoolobjlistsearch may lead to denial of service

published 2023-07-24 3 y ago modified 2026-11-07 45 h ago also EUVD-2023-44385

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 55%
public exploits
0
none known

Summary

A flaw was found in libvirt. The virStoragePoolObjListSearch function does not return a locked pool as expected, resulting in a race condition and denial of service when attempting to lock the same object from another thread. This issue could allow clients connecting to the read-only socket to crash the libvirt daemon.

Patch / fix

  • Red Hat Red Hat Enterprise Linux 9 0:9.5.0-7.el9_3
  • libvirt Debian 12 9.0.0-4+deb12u1
  • libvirt Debian 14, Debian 13 9.6.0-1

debian advisories DEBIAN-CVE-2023-3750

  • libvirt RHEL 9 9.5.0-7.el9_3
  • libvirt-nss RHEL 9 9.5.0-7.el9_3
  • libvirt-libs RHEL 9 9.5.0-7.el9_3
  • libvirt-client RHEL 9 9.5.0-7.el9_3
  • libvirt-daemon RHEL 9 9.5.0-7.el9_3
  • libvirt-daemon-kvm RHEL 9 9.5.0-7.el9_3
  • libvirt-daemon-log RHEL 9 9.5.0-7.el9_3
  • libvirt-client-qemu RHEL 9 9.5.0-7.el9_3

red hat advisories RHSA-2023:6409

  • libvirt SLE Module for Server Applications 15 SP5, SLE Module for Basesystem 15 SP5, openSUSE Leap 15.5 9.0.0-150500.6.11.1

suse advisories SUSE-SU-2023:3043-1

  • libvirt openSUSE Tumbleweed 9.5.0-2.1

opensuse advisories openSUSE-SU-2024:13061-1

  • libvirt AlmaLinux 9 9.5.0-7.el9_3.alma.1
  • libvirt-nss AlmaLinux 9 9.5.0-7.el9_3.alma.1
  • libvirt-libs AlmaLinux 9 9.5.0-7.el9_3.alma.1
  • libvirt-client AlmaLinux 9 9.5.0-7.el9_3.alma.1
  • libvirt-daemon AlmaLinux 9 9.5.0-7.el9_3.alma.1
  • libvirt-daemon-kvm AlmaLinux 9 9.5.0-7.el9_3.alma.1
  • libvirt-daemon-log AlmaLinux 9 9.5.0-7.el9_3.alma.1
  • libvirt-client-qemu AlmaLinux 9 9.5.0-7.el9_3.alma.1

almalinux advisories ALSA-2023:6409

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-2023-3750 updated cvss 6.5

libvirt: improper locking in virStoragePoolObjListSearch may lead to denial of service

  • Red Hat CodeReady Linux Builder (v. 9) libvirt-client-qemu 9.5.0-7.el9_3, libvirt-daemon-plugin-sanlock 9.5.0-7.el9_3 Red Hat Enterprise Linux AppStream (v. 9) libvirt 9.5.0-7.el9_3, libvirt-nss 9.5.0-7.el9_3, libvirt-libs 9.5.0-7.el9_3, libvirt-client 9.5.0-7.el9_3, libvirt-daemon 9.5.0-7.el9_3, libvirt-daemon-kvm 9.5.0-7.el9_3, +21 more
    fixed: vendor fix RHSA-2023:6409
  • Red Hat Enterprise Linux 6 libvirt, libvirt-client, libvirt-python, libvirt-lock-sanlock Red Hat Enterprise Linux 7 libvirt, libvirt-nss, libvirt-libs, libvirt-admin, libvirt-client, libvirt-daemon, +24 more Red Hat Enterprise Linux 8 libvirt, libvirt-nss, libvirt-libs, libvirt-admin, libvirt-client, libvirt-daemon, +22 more Red Hat Enterprise Linux 8 Advanced Virtualization 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

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.76% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 5.3 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Red Hat Red Hat Enterprise Linux 9
  • 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

Classification

Weakness

References

Sources

Fencer Vulns 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.