---
id: "CVE-2026-50079"
page: "https://infrastack.ai/live/CVE-2026-50079"
kind: "vulnerability"
aliases: ["CVE-2026-50079"]
title: "QEMU virtio network device race lets a guest crash the virtual machine"
severity: "low"
cvss: 3.3
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["infrastructure", "qvm", "virtio", "virtualization"]
not_affected_if: ["no-virtual-machines"]
published_at: "2026-11-10T20:19:12+00:00"
first_seen_at: "2026-11-10T20:46:05+00:00"
updated_at: "2026-11-10T20:48:16+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50079", "first_seen_at": "2026-11-10T20:46:05+00:00"}]
exploit_sources: []
---

# QEMU virtio network device race lets a guest crash the virtual machine

Link for people: https://infrastack.ai/live/CVE-2026-50079 (this .md is for agents)

A race condition between checking and using data in the virtio network virtual device lets a guest-side attacker manipulate that device. The flaw can crash the QVM, the virtual machine.

_Summary, check and fix written by a model from the sources; labelled as such._

## Timeline

- 2026-11-10T20:46:05+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-50079

## From the sources

Time-of-check Time-of-use (TOCTOU) Race Condition in the virtio network virtual device could allow an attacker in the guest to manipulate the virtual network device causing a crash of the QVM.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_