---
id: "CVE-2026-112210"
kind: "vulnerability"
aliases: ["CVE-2026-112210"]
title: "rhc systemd unit follows symlinks, enabling local root escalation after yggdrasil compromise"
severity: "medium"
cvss: 6.0
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["infrastructure", "linux", "red-hat-enterprise-linux", "rhc", "systemd"]
not_affected_if: ["rhc-not-installed"]
published_at: "2026-10-19T12:17:01+00:00"
first_seen_at: "2026-10-23T21:57:18+00:00"
updated_at: "2026-10-25T04:05:46+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-112210", "first_seen_at": "2026-10-23T21:57:18+00:00"}]
---

# rhc systemd unit follows symlinks, enabling local root escalation after yggdrasil compromise

The rhc-canonical-facts.service systemd unit runs as root and operates on a file inside a directory owned by an unprivileged system user without checking for symbolic links. A local attacker who already controls the yggdrasil service account can use a symlink to take ownership of arbitrary files and escalate to root.

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

## How to check

- unknown

## Fix

- unknown

## Timeline

- 2026-10-23T21:57:18+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-112210

## From the sources

A flaw was found in the rhc-canonical-facts.service systemd unit shipped with rhc. The service runs as root and operates on a file inside a directory owned by an unprivileged system user without verifying that the file is not a symbolic link. A local attacker who has already compromised the privileged yggdrasil system service account can exploit this to gain ownership of arbitrary files, leading to privilege escalation to root.

---

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