Description
Pacemaker before 1.1.15, when using pacemaker remote, might allow remote attackers to cause a denial of service (node disconnection) via an unauthenticated connection.
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 | pacemaker | 1.1.15~rc3-1 | — |
| Debian 13 | pacemaker | 1.1.15~rc3-1 | — |
| Debian 12 | pacemaker | 1.1.15~rc3-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | pacemaker | 1.1.14-2ubuntu1.2 | USN-3462-1 |
| Ubuntu 14.04 LTS | pacemaker | 1.1.10+git20130802-1ubuntu2.4 | USN-3462-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | pacemaker +8 | 1.1.15-11.el7 | RHSA-2016:2578 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP2 | pacemaker | 1.1.15-21.1 | SUSE-SU-2016:2869-1 |
| SLES 12 SP1 | pacemaker | 1.1.13-20.1 | SUSE-SU-2016:2974-1 |
| SLES 11 SP4 | pacemaker | 1.1.12-18.1 | SUSE-SU-2016:3162-1 |
Advisories 5
- RHSA-2016:2578 Red Hat Security Advisory: pacemaker security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · May 13, 2026
- USN-3462-1 pacemaker vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- SUSE-SU-2016:2869-1 Security update for pacemaker SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:3162-1 Security update for pacemaker SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2974-1 Security update for pacemaker SUSE / openSUSE Security Updates · May 2, 2025
References
- RHSA-2016:2578 vendor-advisory
- openSUSE-SU-2016:3101 vendor-advisory
- [oss-security] 20160930 Re: CVE request: pacemaker DoS when pacemaker remote is in use mailing-list
- http://bugs.clusterlabs.org/show_bug.cgi?id=5269
- openSUSE-SU-2016:2965 vendor-advisory
- https://github.com/ClusterLabs/pacemaker/commit/5ec24a2642bd0854b884d1a9b51d12371373b410
- 93261 vdb-entry
- SUSE-SU-2016:2869 vendor-advisory