Skip to content
Fencer Vulns
medium 5.0

CVE-2024-2496 json

Libvirt: null pointer dereference in udevconnectlistallinterfaces()

published 2024-03-18 2 y ago modified 2026-11-06 3 d ago also EUVD-2024-27445

cvss
5.0
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 NULL pointer dereference flaw was found in the udevConnectListAllInterfaces() function in libvirt. This issue can occur when detaching a host interface while at the same time collecting the list of interfaces via virConnectListAllInterfaces API. This flaw could be used to perform a denial of service attack by causing the libvirt daemon to crash.

Patch / fix

  • Red Hat Red Hat Enterprise Linux 9 0:10.0.0-6.el9_4
  • libvirt Debian 12 9.0.0-4+deb12u1
  • libvirt Debian 14, Debian 13 9.8.0-1

debian advisories DEBIAN-CVE-2024-2496

  • libvirt Ubuntu 20.04 LTS 6.0.0-0ubuntu8.19
  • libvirt Ubuntu 22.04 LTS 8.0.0-1ubuntu7.10
  • libvirt Ubuntu Pro 14.04 LTS 1.2.2-0ubuntu13.1.28+esm2
  • libvirt Ubuntu Pro 16.04 LTS 1.3.1-1ubuntu10.31+esm1
  • libvirt Ubuntu Pro 18.04 LTS 4.0.0-1ubuntu8.21+esm1

ubuntu advisories UBUNTU-CVE-2024-2496

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 10.0.0-6.el9_4
  • libvirt-nss RHEL 9 10.0.0-6.el9_4
  • libvirt-libs RHEL 9 10.0.0-6.el9_4
  • libvirt-client RHEL 9 10.0.0-6.el9_4
  • libvirt-daemon RHEL 9 10.0.0-6.el9_4
  • libvirt-daemon-kvm RHEL 9 10.0.0-6.el9_4
  • libvirt-daemon-log RHEL 9 10.0.0-6.el9_4
  • libvirt-client-qemu RHEL 9 10.0.0-6.el9_4

red hat advisories RHSA-2024:2236

  • libvirt SLE Module for Server Applications 15 SP5, SLE Module for Basesystem 15 SP5, SLE Micro 5.5 +1 more 9.0.0-150500.6.20.1
  • libvirt SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 5.1.0-13.39.1

suse advisories SUSE-SU-2024:1099-1SUSE-SU-2024:1005-1

  • libvirt AlmaLinux 9 10.0.0-6.el9_4.alma.1
  • libvirt-nss AlmaLinux 9 10.0.0-6.el9_4.alma.1
  • libvirt-libs AlmaLinux 9 10.0.0-6.el9_4.alma.1
  • libvirt-client AlmaLinux 9 10.0.0-6.el9_4.alma.1
  • libvirt-daemon AlmaLinux 9 10.0.0-6.el9_4.alma.1
  • libvirt-daemon-kvm AlmaLinux 9 10.0.0-6.el9_4.alma.1
  • libvirt-daemon-log AlmaLinux 9 10.0.0-6.el9_4.alma.1
  • libvirt-client-qemu AlmaLinux 9 10.0.0-6.el9_4.alma.1

almalinux advisories ALSA-2024:2236

  • libvirt CBL-Mariner 2.0 7.10.0-8

azure linux advisories AZL-36893

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-2024-2496 updated cvss 5.0

libvirt: NULL pointer dereference in udevConnectListAllInterfaces()

  • 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: workaround, no fix planned “Out of support scope”
  • 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
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Enterprise Linux AppStream (v. 9) libvirt 10.0.0-6.el9_4, libvirt-nss 10.0.0-6.el9_4, libvirt-libs 10.0.0-6.el9_4, libvirt-client 10.0.0-6.el9_4, libvirt-daemon 10.0.0-6.el9_4, libvirt-daemon-kvm 10.0.0-6.el9_4, +22 more Red Hat Enterprise Linux CRB (v. 9) libvirt-daemon-plugin-sanlock 10.0.0-6.el9_4
    fixed: vendor fix RHSA-2024:2236

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

0.25% 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
CNA 3.1 5.0 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/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

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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.