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Vulnerability record · CVE-2022-3821 · published 8 November 2022

CVE-2022-3821: Systemd project systemd vulnerability

Systemd Project · Systemd

An off-by-one Error issue was discovered in Systemd in format_timespan() function of time-util.c. An attacker could supply specific values for time and accuracy that leads to buffer overrun in format_timespan(), leading to a Denial of Service.

5.5 CVSS 3.1 Medium EPSS 0.42% · top 66.1% CWE-193 · CWE-193
5.5CVSS 3.1 base score
0.42%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
14References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

An off-by-one Error issue was discovered in Systemd in format_timespan() function of time-util.c. An attacker could supply specific values for time and accuracy that leads to buffer overrun in format_timespan(), leading to a Denial of Service.

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

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://bugzilla.redhat.com/show_bug.cgi?id=2139327 Issue TrackingThird Party Advisory
https://github.com/systemd/systemd/commit/9102c625a673a3246d7e73d8737f3494446bad4e PatchThird Party Advisory
https://github.com/systemd/systemd/issues/23928 ExploitIssue TrackingThird Party Advisory
https://github.com/systemd/systemd/pull/23933 PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/06/msg00036.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RVBQC2VLSDVQAPJTEMTREXD
https://security.gentoo.org/glsa/202305-15
https://bugzilla.redhat.com/show_bug.cgi?id=2139327 Issue TrackingThird Party Advisory
https://github.com/systemd/systemd/commit/9102c625a673a3246d7e73d8737f3494446bad4e PatchThird Party Advisory
https://github.com/systemd/systemd/issues/23928 ExploitIssue TrackingThird Party Advisory
https://github.com/systemd/systemd/pull/23933 PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/06/msg00036.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RVBQC2VLSDVQAPJTEMTREXD
https://security.gentoo.org/glsa/202305-15

Track CVE-2022-3821 inside VULONE

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2022-3821), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.