CVE-2022-42917

MediumCVSS 6.7/10Last modified Sep 22, 2026

Description

In FRRouting FRR before 8.5, the service user (usually frr) can escalate its privileges to root by monitoring the configuration directory (/etc/frr) and replacing config files upon creation with, for example, symlinks to change the ownership of arbitrary files. This is a TOCTOU Race Condition caused by a combination of touch and chown.

Metrics

CVSS 3.1 6.7/10CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-367

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

No affected versions have been published.

Timeline

Published: Sep 14, 2026
Last modified: Sep 22, 2026
NVD status: Awaiting Analysis

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