# ALBA-2021:3578: pacemaker bug fix and enhancement update

> Pacemaker cluster manager updates fix bugs causing unfence loops and unremovable attributes, potentially leading to service disruption.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Not stated
- **Attackable:** Not stated
- **Victim action needed:** Not stated
- **Fix available:** Yes
- **Published:** 21 Sep 2021

## What is ALBA-2021:3578?

ALBA-2021:3578 is a vulnerability in pacemaker, published on 21 Sep 2021. 

### Official description

The Pacemaker cluster resource manager is a collection of technologies
working together to maintain data integrity and application availability in
the event of failures.

Bug Fix(es) and Enhancement(s):

* pacemaker seems to end up in an unfence loop (BZ#1972273)

* On a three-node cluster if two nodes are hard-reset, sometimes the
cluster ends up with unremovable transient attributes (BZ#1989622)

* Pacemaker fencer should retry failed meta-data commands (BZ#1992014)

* [RFE] Add ability to use sbd on cluster nodes but not remote nodes
(BZ#1993891)

## Which versions are affected by ALBA-2021:3578?


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `pacemaker` | AlmaLinux:8 | All versions | 2.0.5-9.el8_4.3 |
| `pacemaker-cli` | AlmaLinux:8 | All versions | 2.0.5-9.el8_4.3 |
| `pacemaker-cts` | AlmaLinux:8 | All versions | 2.0.5-9.el8_4.3 |
| `pacemaker-doc` | AlmaLinux:8 | All versions | 2.0.5-9.el8_4.3 |
| `pacemaker-libs-devel` | AlmaLinux:8 | All versions | 2.0.5-9.el8_4.3 |
| `pacemaker-nagios-plugins-metadata` | AlmaLinux:8 | All versions | 2.0.5-9.el8_4.3 |
| `pacemaker-remote` | AlmaLinux:8 | All versions | 2.0.5-9.el8_4.3 |

## How do I fix ALBA-2021:3578?

Apply the vendor's patch.

## Is ALBA-2021:3578 being exploited?

There is no known exploitation of ALBA-2021:3578 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for ALBA-2021:3578 and fix it if it is affected.

What it is: ALBA-2021:3578 is a vulnerability in pacemaker, published on 21 Sep 2021. 
Exploitation: There is no known exploitation of ALBA-2021:3578 in the wild and no public exploit code.

Affected product: pacemaker. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/ALBA-2021-3578/ (Markdown: https://insights.sbomify.com/ALBA-2021-3578/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/ALBA-2021:3578

---
From sbomify Insights: https://insights.sbomify.com/ALBA-2021-3578/
Summaries are generated and may contain mistakes; the official description above is the record.