---
id: "CVE-2026-115372"
kind: "vulnerability"
aliases: ["CVE-2026-115372"]
title: "Incus: restricted project users can inject mkfs arguments as root"
severity: "critical"
cvss: 9.0
epss: 0.00362
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["incus", "infrastructure", "linux", "self-hosted"]
not_affected_if: ["default-config"]
published_at: "2026-10-22T19:17:43+00:00"
first_seen_at: "2026-10-23T21:57:31+00:00"
updated_at: "2026-10-24T07:15:51+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-115372", "first_seen_at": "2026-10-23T21:57:31+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-115372", "first_seen_at": "2026-10-24T07:15:51+00:00"}]
---

# Incus: restricted project users can inject mkfs arguments as root

Users in a restricted Incus project can set block.create_options on a storage volume through update, copy, or move operations, bypassing the project restriction. Triggering a copy or move onto a formatting pool injects arguments into mkfs, which runs as root, so an attacker can gain root on the host.

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

## How to check

incus --version

## Fix

Upgrade Incus to 7.5.0 or later.

## Timeline

- 2026-10-23T21:57:31+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-115372
- 2026-10-24T07:15:51+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-115372

## From the sources

Incus from 7.3.0 before 7.5.0 contains a project restriction bypass that allows restricted project users to set block.create_options through volume update, copy, and move operations. Attackers can set the option on a custom volume and trigger a copy or move onto a formatting pool to inject arguments into mkfs executed as root.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_