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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | systemd | Fixed in systemd v252-rc1 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | systemd | 251.3-1 | — |
| Debian 13 | systemd | 251.3-1 | — |
| Debian 12 | systemd | 251.3-1 | — |
| Debian 10 | systemd | 241-7~deb10u10 | DLA-3474-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | systemd | 249.11-0ubuntu3.7 | USN-5928-1 |
| Ubuntu 20.04 LTS | systemd | 245.4-4ubuntu3.20 | USN-5928-1 |
| Ubuntu 18.04 LTS | systemd | 237-3ubuntu10.57 | USN-5928-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | systemd | 229-4ubuntu21.31+esm3 | USN-5928-1 |
| Ubuntu Pro 14.04 LTS | systemd | 204-5ubuntu20.31+esm2 | USN-5928-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | systemd +9 | 250-12.el9_1.1 | RHSA-2023:0336 |
| RHEL 8 | systemd +7 | 239-68.el8_7.1 | RHSA-2023:0100 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8.6 EUS | systemd +7 | 239-58.el8_6.13 | RHSA-2024:1105 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | systemd +9 | 250-12.el9_1.1 | ALSA-2023:0336 |
| AlmaLinux 8 | systemd +7 | 239-68.el8_7.1 | ALSA-2023:0100 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | systemd | 250-12.el9_1.1 | RLSA-2023:0336 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | systemd | 249.12-150400.8.13.1 | SUSE-SU-2022:3999-1 |
| SLES 15 SP3 | systemd | 246.16-150300.7.54.1 | SUSE-SU-2022:4056-1 |
| SLES 12 SP5 | systemd | 228-157.43.2 | SUSE-SU-2022:4279-1 |
| SLES 12 SP4 | systemd | 228-150.108.2 | SUSE-SU-2023:1776-1 |
| SLES 12 SP2 | systemd | 228-150.108.2 | SUSE-SU-2023:1776-1 |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP5 | systemd | 228-157.43.2 | SUSE-SU-2022:4279-1 |
| SLES for SAP 12 SP4 | systemd | 228-150.108.2 | SUSE-SU-2023:1776-1 |
| SLE Micro 6.0 | systemd | 254.18-1.1 | SUSE-SU-2025:20041-1 |
| SLE Micro 5.3 | systemd | 249.12-150400.8.13.1 | SUSE-SU-2022:3999-1 |
| SLE Micro 5.2 | systemd | 246.16-150300.7.54.1 | SUSE-SU-2022:4056-1 |
| SLE Micro 5.1 | systemd | 246.16-150300.7.54.1 | SUSE-SU-2022:4056-1 |
| SUSE OpenStack Cloud Crowbar 9 | systemd | 228-150.108.2 | SUSE-SU-2023:1776-1 |
| SUSE OpenStack Cloud 9 | systemd | 228-150.108.2 | SUSE-SU-2023:1776-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | systemd | 254.5-3.1 | openSUSE-SU-2024:13366-1 |
| openSUSE Leap 15.4 | systemd | 246.16-150300.7.54.1 | SUSE-SU-2022:4056-1, SUSE-SU-2022:3999-1 |
| openSUSE Leap 15.3 | systemd | 246.16-150300.7.54.1 | SUSE-SU-2022:4056-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.2 | systemd | 246.16-150300.7.54.1 | SUSE-SU-2022:4056-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | systemd +9 | 219-78.amzn2.0.21 | ALAS2-2022-1899 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | systemd-bootstrap | 250.3-17 | — |
| Azure Linux 2 (CBL-Mariner) | systemd | 250.3-10 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | systemd +9 | 250-12.0.2.el9_1.1 | ELSA-2023-0336 |
| Oracle Linux 8 | systemd +7 | 239-68.0.2.el8_7.1 | ELSA-2023-0100 |
Advisories 22
- ALSA-2023:0336 Moderate: systemd security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:0100 Moderate: systemd security and bug fix update AlmaLinux Security Advisories · Oct 29, 2026
- SSA-398330 SSA-398330: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP >= V3.1.0 and < V3.1.5 Siemens ProductCERT · Oct 13, 2026
- WID-SEC-2024-0794 Dell ECS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 11, 2026
- RHSA-2024:1105 Red Hat Security Advisory: systemd security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- USN-5928-1 systemd vulnerabilities Ubuntu Security Notices (USN) · Jun 29, 2026
- RHSA-2023:0336 Red Hat Security Advisory: systemd security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- SUSE-SU-2025:20041-1 Security update for systemd SUSE / openSUSE Security Updates · Mar 23, 2026
- DLA-3474-1 systemd - security update Debian Security (DSA / DLA) · Mar 9, 2026
- WID-SEC-2022-2012 systemd: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Feb 15, 2026
- RLSA-2023:0336 Moderate: systemd security update Rocky Linux Security Advisories · Feb 4, 2026
- SUSE-SU-2022:4279-1 Security update for systemd SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13366-1 libsystemd0-254.5-3.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4056-1 Security update for systemd SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:3999-1 Security update for systemd SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:1776-1 Security update for systemd SUSE / openSUSE Security Updates · Feb 4, 2026
- RHSA-2023:0100 Red Hat Security Advisory: systemd security and bug fix update Red Hat Security Advisories (RHSA) · Dec 27, 2025
- WID-SEC-2023-1542 Red Hat OpenShift: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 18, 2025
- ICSA-23-348-10 Siemens SIMATIC S7-1500 CISA ICS & IT advisories · Aug 12, 2025
- ELSA-2023-0336 Moderate: systemd security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jan 26, 2023
- ELSA-2023-0100 Moderate: systemd security and bug fix update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jan 14, 2023
- ALAS2-2022-1899 Moderate: systemd security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Dec 6, 2022
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2139327
- https://github.com/systemd/systemd/issues/23928
- https://github.com/systemd/systemd/pull/23933
- https://github.com/systemd/systemd/commit/9102c625a673a3246d7e73d8737f3494446bad4e
- FEDORA-2022-8ac4104a02 vendor-advisory
- GLSA-202305-15 vendor-advisory
- [debian-lts-announce] 20230629 [SECURITY] [DLA 3474-1] systemd security update mailing-list