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Fencer Vulns
medium 4.7

CVE-2022-29800 json

A time-of-check-time-of-use (TOCTOU) race condition vulnerability was found in networkd-dispatcher.

published 2022-09-21 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-34121

cvss
4.7
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
7.2%
EPSS 7.2% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

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.

Patch / fix

  • networkd-dispatcher Debian 14, Debian 13, Debian 12 2.2.3-1

debian advisories DEBIAN-CVE-2022-29800

  • networkd-dispatcher Ubuntu 18.04 LTS 1.7-0ubuntu3.4
  • networkd-dispatcher Ubuntu 20.04 LTS 2.1-2~ubuntu20.04.2
  • networkd-dispatcher Ubuntu 22.04 LTS 2.1-2ubuntu0.22.04.1

ubuntu advisories UBUNTU-CVE-2022-29800

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-29800 updated cvss 4.7

networkd-dispatcher: Time-of-check-time-of-use (TOCTOU) race condition

  • Red Hat Enterprise Linux 6 networkd-dispatcher Red Hat Enterprise Linux 7 networkd-dispatcher Red Hat Enterprise Linux 8 networkd-dispatcher Red Hat Enterprise Linux 9 networkd-dispatcher
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
17 mo ago

Exploit prediction

7.16% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • microsoft.com https://www.microsoft.com/security/blog/2022/04/26/microsoft-finds-new-elevation-of-privilege-linux-vulnerability-nimbuspwn/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
NVD 3.1 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
CNA 3.1 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N

Affected products

  • n/a networkd-dispatcher

Classification

Weakness
  • CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.