CVE-2022-3821

Publication date 8 November 2022

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

5.5 · Medium

Score breakdown

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.

Read the notes from the security team

Status

Package Ubuntu Release Status
systemd 22.10 kinetic
Not affected
22.04 LTS jammy
Fixed 249.11-0ubuntu3.7
20.04 LTS focal
Fixed 245.4-4ubuntu3.20
18.04 LTS bionic
Fixed 237-3ubuntu10.57
16.04 LTS xenial
Fixed 229-4ubuntu21.31+esm3
14.04 LTS trusty
Fixed 204-5ubuntu20.31+esm2

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Notes

0xnishit

For trusty, time-util.c resides in src/shared/time-util.c

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
systemd

Severity score breakdown

Parameter Value
Base score 5.5 · Medium
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

Other references