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Fencer Vulns
medium 5.5

CVE-2023-2700 json

A vulnerability was found in libvirt.

published 2023-05-15 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-34164

cvss
5.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 16%
public exploits
0
none known

Summary

A vulnerability was found in libvirt. This security flaw ouccers due to repeatedly querying an SR-IOV PCI device's capabilities that exposes a memory leak caused by a failure to free the virPCIVirtualFunction array within the parent struct's g_autoptr cleanup.

Patch / fix

  • libvirt Debian 14, Debian 13, Debian 12 9.0.0-4

debian advisories DEBIAN-CVE-2023-2700

  • libvirt Ubuntu 22.04 LTS 8.0.0-1ubuntu7.5

ubuntu advisories UBUNTU-CVE-2023-2700

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 9 9.0.0-10.2.el9_2
  • libvirt-nss RHEL 9 9.0.0-10.2.el9_2
  • libvirt-libs RHEL 9 9.0.0-10.2.el9_2
  • libvirt-client RHEL 9 9.0.0-10.2.el9_2
  • libvirt-daemon RHEL 9 9.0.0-10.2.el9_2
  • libvirt-daemon-kvm RHEL 9 9.0.0-10.2.el9_2
  • libvirt-client-qemu RHEL 9 9.0.0-10.2.el9_2
  • libvirt-lock-sanlock RHEL 9 9.0.0-10.2.el9_2

red hat advisories RHSA-2023:4799RHSA-2023:3715RHSA-2023:3822

  • libvirt SLE Module for Server Applications 15 SP5, SLE Module for Basesystem 15 SP5, openSUSE Leap 15.5 9.0.0-150500.6.3.1
  • libvirt SLE Module for Server Applications 15 SP4, SLE Module for Basesystem 15 SP4, SLE Micro 5.4 +3 more 8.0.0-150400.7.6.1

suse advisories SUSE-SU-2023:2652-1SUSE-SU-2023:2356-1

  • libvirt openSUSE Tumbleweed 10.9.0-3.1

opensuse advisories openSUSE-SU-2024:14490-1

  • SLOF AlmaLinux 8 20210217-1.module_el8.6.0+2880+7d9e3703
  • hivex AlmaLinux 8 1.3.18-23.module_el8.6.0+2880+7d9e3703
  • hivex AlmaLinux 8 1.3.18-23.module_el8.6.0+3161+a07c0ea5
  • netcf AlmaLinux 8 0.2.8-12.module_el8.6.0+2880+7d9e3703
  • netcf AlmaLinux 8 0.2.8-12.module_el8.6.0+3161+a07c0ea5
  • swtpm AlmaLinux 8 0.7.0-4.20211109gitb79fd91.module_el8.7.0+3346+68867adb
  • libnbd AlmaLinux 8 1.6.0-5.module_el8.6.0+2880+7d9e3703
  • libnbd AlmaLinux 8 1.6.0-5.module_el8.6.0+3161+a07c0ea5

almalinux advisories ALSA-2023:3822ALSA-2023:3715

  • libvirt Rocky Linux 9 9.0.0-10.2.el9_2
  • hivex Rocky Linux 8 1.3.18-23.module+el8.8.0+1279+230c2115
  • netcf Rocky Linux 8 0.2.8-12.module+el8.8.0+1279+230c2115
  • swtpm Rocky Linux 8 0.7.0-4.20211109gitb79fd91.module+el8.8.0+1279+230c2115
  • libnbd Rocky Linux 8 1.6.0-5.module+el8.8.0+1279+230c2115
  • nbdkit Rocky Linux 8 1.24.0-5.module+el8.8.0+1279+230c2115
  • libtpms Rocky Linux 8 0.9.1-2.20211126git1ff6fe1f43.module+el8.8.0+1279+230c2115
  • libvirt Rocky Linux 8 8.0.0-19.2.module+el8.8.0+1321+70d049b2

rocky linux advisories RLSA-2023:3715RLSA-2023:3822

  • libvirt CBL-Mariner 2.0, Azure Linux 3.0 7.10.0-5

azure linux advisories AZL-26736AZL-34958

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

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-2023-2700 updated cvss 6.3

libvirt: Memory leak in virPCIVirtualFunctionList cleanup

  • 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
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 Advanced Virtualization libvirt, libvirt-nss, libvirt-libs, libvirt-admin, libvirt-client, libvirt-daemon, +22 more
    affected: no fix planned “Will not fix”
  • Red Hat CodeReady Linux Builder EUS (v.8.6) libnbd 1.6.0-5.module+el8.6.0+14480+c0a3aa0f, netcf 0.2.8-12.module+el8.6.0+14480+c0a3aa0f, hivex 1.3.18-23.module+el8.6.0+14480+c0a3aa0f, nbdfuse 1.6.0-5.module+el8.6.0+14480+c0a3aa0f, SLOF 20210217-1.module+el8.6.0+14480+c0a3aa0f, libiscsi 1.18.0-8.module+el8.6.0+14480+c0a3aa0f, +38 more
    fixed: vendor fix RHSA-2023:4799
  • Red Hat Enterprise Linux AppStream (v. 8) libnbd 1.6.0-5.module+el8.8.0+16781+9f4724c2, netcf 0.2.8-12.module+el8.8.0+16781+9f4724c2, hivex 1.3.18-23.module+el8.8.0+16781+9f4724c2, nbdfuse 1.6.0-5.module+el8.8.0+16781+9f4724c2, nbdkit 1.24.0-5.module+el8.8.0+17308+05924798, SLOF 20210217-1.module+el8.8.0+16781+9f4724c2, +104 more
    fixed: vendor fix RHSA-2023:3822
  • Red Hat Enterprise Linux AppStream (v. 9) libvirt 9.0.0-10.2.el9_2, libvirt-nss 9.0.0-10.2.el9_2, libvirt-libs 9.0.0-10.2.el9_2, libvirt-client 9.0.0-10.2.el9_2, libvirt-daemon 9.0.0-10.2.el9_2, libvirt-daemon-kvm 9.0.0-10.2.el9_2, +16 more
    fixed: vendor fix RHSA-2023:3715
  • Red Hat Enterprise Linux AppStream EUS (v.8.6) libnbd 1.6.0-5.module+el8.6.0+14480+c0a3aa0f, netcf 0.2.8-12.module+el8.6.0+14480+c0a3aa0f, hivex 1.3.18-23.module+el8.6.0+14480+c0a3aa0f, nbdfuse 1.6.0-5.module+el8.6.0+14480+c0a3aa0f, nbdkit 1.24.0-4.module+el8.6.0+14480+c0a3aa0f, SLOF 20210217-1.module+el8.6.0+14480+c0a3aa0f, +104 more
    fixed: vendor fix RHSA-2023:4799
  • Red Hat Enterprise Linux CRB (v. 8) libnbd 1.6.0-5.module+el8.8.0+16781+9f4724c2, netcf 0.2.8-12.module+el8.8.0+16781+9f4724c2, hivex 1.3.18-23.module+el8.8.0+16781+9f4724c2, nbdfuse 1.6.0-5.module+el8.8.0+16781+9f4724c2, SLOF 20210217-1.module+el8.8.0+16781+9f4724c2, seabios 1.16.0-3.module+el8.8.0+16781+9f4724c2, +38 more
    fixed: vendor fix RHSA-2023:3822
  • Red Hat Enterprise Linux CRB (v. 9) libvirt-client-qemu 9.0.0-10.2.el9_2, libvirt-lock-sanlock 9.0.0-10.2.el9_2
    fixed: vendor fix RHSA-2023:3715

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
21 mo ago

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CNA 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

  • n/a libvirt

Classification

Weakness
  • CWE-401 Missing Release of Memory after Effective Lifetime

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.