What’s Vulnerable › Vulnerabilities

CVE-2024-2496: Libvirt: null pointer dereference in udevconnectlistallinterfaces()

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-03-18 · updated 2026-06-17
• Weakness: CWE-476

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 products

• Debian Linux: 10.0
• Red Hat Enterprise Linux: 6.0, 7.0, 8.0, 9.0
• libvirt: before 9.8.0 — fixed in 9.8.0

How to fix

Upgrade to a fixed version: libvirt 9.8.0. Check the vendor advisory for mitigations.

References

• https://access.redhat.com/errata/RHSA-2024:2236
• https://access.redhat.com/security/cve/CVE-2024-2496
• https://bugzilla.redhat.com/show_bug.cgi?id=2269672
• https://access.redhat.com/errata/RHSA-2024:2236
• https://access.redhat.com/security/cve/CVE-2024-2496
• https://bugzilla.redhat.com/show_bug.cgi?id=2269672
• https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html

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