Description
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.
Published: 2026-10-19
Score: 6 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Workaround

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.

Tracking

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Advisories

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History

Mon, 19 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 19 Oct 2026 12:30:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Mon, 19 Oct 2026 11:45:00 +0000

Type Values Removed Values Added
Description 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.
Title Rhc: rhc: local privilege escalation via symlink following in rhc-canonical-facts.service
First Time appeared Redhat
Redhat enterprise Linux
Weaknesses CWE-59
CPEs cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
References
Metrics cvssV3_1

{'score': 6, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H'}


Subscriptions

Redhat Enterprise Linux
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-10-19T18:29:07.128Z

Reserved: 2026-10-19T10:20:51.005Z

Link: CVE-2026-112210

cve-icon Vulnrichment

Updated: 2026-10-19T18:28:51.409Z

cve-icon NVD

Status : Received

Published: 2026-10-19T12:17:01.910

Modified: 2026-10-19T19:17:26.500

Link: CVE-2026-112210

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-15T21:55:33Z

Links: CVE-2026-112210 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-19T12:30:14Z

Weaknesses
  • CWE-59

    Improper Link Resolution Before File Access ('Link Following')