Vulnerability · Published Mar 18, 2024 · Assigned by redhat
CVE-2024-2496Libvirt: null pointer dereference in udevconnectlistallinterfaces()
Medium 5.0
In plain English
A medium-severity null pointer dereference in libvirt. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 17% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.0Medium
Exploit odds (30 days)0.3%top 83.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:9 | libvirt | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| AlmaLinux:9 | libvirt-client | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| AlmaLinux:9 | libvirt-client-qemu | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| AlmaLinux:9 | libvirt-daemon | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| AlmaLinux:9 | libvirt-daemon-common | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| AlmaLinux:9 | libvirt-daemon-config-network | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| AlmaLinux:9 | libvirt-daemon-config-nwfilter | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| AlmaLinux:9 | libvirt-daemon-driver-interface | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| AlmaLinux:9 | libvirt-daemon-driver-network | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| AlmaLinux:9 | libvirt-daemon-driver-nodedev | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| AlmaLinux:9 | libvirt-daemon-driver-nwfilter | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| AlmaLinux:9 | libvirt-daemon-driver-qemu | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| AlmaLinux:9 | libvirt-daemon-driver-secret | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| AlmaLinux:9 | libvirt-daemon-driver-storage | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| AlmaLinux:9 | libvirt-daemon-driver-storage-core | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| AlmaLinux:9 | libvirt-daemon-driver-storage-disk | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| AlmaLinux:9 | libvirt-daemon-driver-storage-iscsi | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| AlmaLinux:9 | libvirt-daemon-driver-storage-logical | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| AlmaLinux:9 | libvirt-daemon-driver-storage-mpath | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| AlmaLinux:9 | libvirt-daemon-driver-storage-rbd | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| AlmaLinux:9 | libvirt-daemon-driver-storage-scsi | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| AlmaLinux:9 | libvirt-daemon-kvm | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| AlmaLinux:9 | libvirt-daemon-lock | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| AlmaLinux:9 | libvirt-daemon-log | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| AlmaLinux:9 | libvirt-daemon-plugin-lockd | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| AlmaLinux:9 | libvirt-daemon-plugin-sanlock | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| AlmaLinux:9 | libvirt-daemon-proxy | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| AlmaLinux:9 | libvirt-devel | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| AlmaLinux:9 | libvirt-docs | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| AlmaLinux:9 | libvirt-libs | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| AlmaLinux:9 | libvirt-nss | 10.0.0-6.el9_4.alma.1 | ALSA-2024:2236 |
| Debian:12 | libvirt | 9.0.0-4+deb12u1 | DEBIAN-CVE-2024-2496 |
| Debian:13 | libvirt | 9.8.0-1 | DEBIAN-CVE-2024-2496 |
| Debian:14 | libvirt | 9.8.0-1 | DEBIAN-CVE-2024-2496 |
| Ubuntu:22.04:LTS | libvirt | 8.0.0-1ubuntu7.10 | UBUNTU-CVE-2024-2496 |
| Ubuntu:22.04:LTS | libvirt | 8.0.0-1ubuntu7.10 | USN-6734-1 |
| Ubuntu:22.04:LTS | libvirt | 8.0.0-1ubuntu7.19 | USN-8652-1 |
| Ubuntu:24.04:LTS | libvirt | 10.0.0-2ubuntu8.16 | USN-8652-1 |
| Ubuntu:26.04:LTS | libvirt | 12.0.0-1ubuntu5.3 | USN-8652-1 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| libvirt | 9.0.0 – before 9.7.0 | |
| Red Hat | Red Hat Enterprise Linux 9 | see references |
| Red Hat | Red Hat Enterprise Linux 6 | see references |
| Red Hat | Red Hat Enterprise Linux 7 | see references |
| Red Hat | Red Hat Enterprise Linux 8 | see references |
| Red Hat | Red Hat Enterprise Linux 8 Advanced Virtualization | see references |
Weakness: CWE-476 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
References
- RHSA-2024:2236 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2024-2496 vdb-entry, x_refsource_REDHAT
- RHBZ#2269672 issue-tracking, x_refsource_REDHAT
- https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html x_transferred