CVE-2022-42917
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.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 6.7
- CVSS vector
- CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
- EPSS probability
- 0.13%
- CWE
- CWE-367
- Published
- 2026-09-13
- Last modified
- 2026-09-14
Affected products
- FRRouting FRRouting
Weakness type
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