Description
The manager_invoke_notify_message function in systemd 231 and earlier allows local users to cause a denial of service (assertion failure and PID 1 hang) via a zero-length message received over a notify socket.
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 | 231-9 | — |
| Debian 13 | systemd | 231-9 | — |
| Debian 12 | systemd | 231-9 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | systemd | 229-4ubuntu10 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | systemd +9 | 219-30.el7_3.3 | RHSA-2016:2610 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7.2 EUS | systemd +9 | 219-19.el7_2.18 | RHSA-2016:2694 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | systemd +9 | 219-30.0.1.el7_3.3 | ELSA-2016-2610 |
Advisories 3
- RHSA-2016:2610 Red Hat Security Advisory: systemd security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2016:2694 Red Hat Security Advisory: systemd security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- ELSA-2016-2610 Moderate: systemd security and bug fix update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 9, 2016
References
- [oss-security] 20160930 Re: CVE Request: systemd v209+: local denial-of-service attack mailing-list
- [oss-security] 20160928 CVE Request: systemd v209+: local denial-of-service attack mailing-list
- 93223 vdb-entry
- RHSA-2016:2610 vendor-advisory
- https://www.agwa.name/blog/post/how_to_crash_systemd_in_one_tweet
- USN-3094-1 vendor-advisory
- https://github.com/systemd/systemd/issues/4234
- 1037320 vdb-entry
- RHSA-2016:2694 vendor-advisory