---
id: CVE-2026-112210
title: >-
  Rhc: rhc: local privilege escalation via symlink following in
  rhc-canonical-facts.service
summary: >-
  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 …
severity: medium
cvss: 6
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-59
vendor: Red Hat
product: rhc
affected:
  - rhc (all versions)
  - rhc
  - rhc
  - rhc
published: '2026-10-19'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T13:00:27.192Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-112210'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-112210'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2555474'
    label: RHBZ#2555474
  - url: >-
      https://github.com/RedHatInsights/rhc/blob/51928db/data/systemd/rhc-canonical-facts.service
tags:
  - cve.org
ingestedAt: '2026-10-19T12:27:23.801Z'
---

## Overview

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.

## Affected

- `rhc (all versions)`
- `rhc`
- `rhc`
- `rhc`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

### Workarounds

Disable the rhc-canonical-facts timer to prevent automatic triggering of the vulnerable service:

    systemctl stop rhc-canonical-facts.timer
    systemctl disable rhc-canonical-facts.timer

Note that this will prevent rhc from updating canonical facts automatically. The rhc connect command will still trigger the service manually.