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CVE-2022-29800

MediumPublished

A time-of-check-time-of-use (TOCTOU) race condition vulnerability was found in networkd-dispatcher. This flaw exists because there is a certain time between...

Published: Sep 21, 2022
Updated: May 28, 2025
Assigning CNA: fedora
Evidence observed: Aug 8, 2026

Primary CVSS

4.7/ 10Medium

nvd · CVSS 3.1

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N

EPSS probability estimate

7.2%

Low · next 30 days

Percentile: 94.1%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

A time-of-check-time-of-use (TOCTOU) race condition vulnerability was found in networkd-dispatcher. This flaw exists because there is a certain time between the scripts being discovered and them being run. An attacker can abuse this vulnerability to replace scripts that networkd-dispatcher believes to be owned by root with ones that are not.

Sources

NimbusPWN-CVE-2022-29799-29800Exploit
NimbusPwn (CVE-2022-29799/29800) local privilege escalation PoC in C.
nimbuspwn-CVE-2022-29800-CVE-2022-29799PoC
PoC for Nimbuspwn: Linux Privilege Escalation via Path Traversal and TOCTOU in networkd-dispatcher

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